Gilles Crofils

Gilles Crofils

Hands-On Chief Technology Officer

Tech leader who transforms ambitious ideas into sustainable businesses. Successfully led digital transformations for global companies while building ventures that prioritize human connection over pure tech.1974 Birth.
1984 Delved into coding.
1999 Failed my First Startup in Science Popularization.
2010 Co-founded an IT Services Company in Paris/Beijing.
2017 Led a Transformation Plan for SwitchUp in Berlin.
November 2025 Launched Nook.coach. Where conversations shape healthier habits

How solo tech professionals can turn setbacks into growth

Abstract:

The article addresses the emotional challenges solo tech professionals—especially tech minimalists—face when dealing with setbacks, highlighting how working alone can amplify self-doubt, imposter syndrome, and rumination due to the lack of immediate feedback and support. Drawing on examples such as a freelancer missing key client information and an indie founder’s unsuccessful side project launch, the piece illustrates how setbacks are often internalized as personal flaws rather than process issues. To counter this, the article introduces the "blameless postmortem," an engineering practice focused on understanding setbacks without assigning blame, and provides step-by-step guidance for adapting this method to personal reflection. It offers practical tools like templates, journaling prompts, and structured questions, emphasizing the importance of neutral event logging, identifying root causes, and celebrating small wins. The article also cautions against turning reflection into just another productivity metric, advocating for a balance of self-compassion and consistency over intensity. Ultimately, it argues that gentle, structured self-review helps solo tech workers reframe mistakes as learning opportunities, building resilience and sustainable growth, so that every setback becomes a stepping stone rather than a source of guilt or burnout.

Setbacks can sting, especially when I’m working solo in tech and want to keep things simple. Without a team for quick feedback or support, even small mistakes can seem much bigger. For a tech minimalist like me, who values independence, it’s easy to think a slip means something is wrong with me, not just with the way I work. Working alone, with high personal standards, can turn normal problems into big doubts. Sometimes, missing a deadline feels like dropping a baguette in the mud—messy, but not the end of the world.

I want to share why setbacks feel so intense for solo tech professionals, and why imposter syndrome and overthinking are so common on this path. I’ll explain a practical way I’ve learned to handle mistakes using a “blameless postmortem” from engineering, which helps turn slip-ups into learning instead of guilt. I’ll walk through step-by-step ideas for running your own mindset postmortem, tips for lighter reflection, and examples from my own indie tech journey (including a few stories from Paris, Beijing, Berlin, and Lisbon). There’s also a list of simple templates and prompts to help build a habit of gentle self-review, plus advice for keeping the whole process manageable.

Whether you’re freelancing, building your own thing, or just want to handle solo work better, I hope you’ll find ways to turn setbacks into growth—no blame needed. Here’s how structure, curiosity, and a bit of kindness can make every mistake another step forward.

Why setbacks hit hard for solo tech minimalists

The solo work paradox

Picture me at my desk in Lisbon, code ticking away, dashboards flickering, but no one around for a quick chat. For many solo tech professionals, this is everyday life. Without casual chats or instant feedback, even a minor bug or delay can feel huge. This lack of outside input makes it hard to keep mistakes in perspective, so small slips can grow into big doubts. Research shows that isolation increases the emotional weight of mistakes, making setbacks feel heavier when there’s no one to help put things in perspective.

For tech minimalists like me, this is often stronger. Working alone, there’s no colleague to remind me everyone messes up sometimes. Struggling with a tricky bug, I might start to think the problem points to a deeper flaw in myself. Studies suggest that without feedback, people working alone often internalize setbacks, seeing them as proof of personal flaws instead of just a rough day.

Minimalists who are proud of working lean and independent often take mishaps to heart, treating them as judgments on their character, not just part of the process. This cycle often leads to imposter syndrome, where normal mistakes feel like personal failure.

Imposter syndrome and rumination

Imposter syndrome is almost a given in tech, especially for freelancers and indie founders. When projects go wrong or feedback stings, it’s easy to think I don’t really belong. This feeling leads to replaying mistakes over and over—like the time I received a critical client email and spent hours wondering if I was fit for the job. Many surveys show that imposter feelings are common in tech, and setbacks can make those doubts feel justified.

As someone who’s bootstrapped ventures, I know financial uncertainty can amplify self-doubt during tough weeks. Without teammates to normalize mistakes, solo workers like me get stuck ruminating. Setbacks replay in my mind, building anxiety and making it hard to move on. Over time, this cycle can eat away at confidence, leading even skilled people to second-guess themselves. Research points out that rumination can make it tougher for freelancers to recover from problems.

Isolation also means it’s hard to separate one setback from my self-worth. Every stumble can feel like a personal threat, making my confidence easy to shake. But there are structured ways to break this cycle and learn from setbacks, helping solo tech professionals become more resilient and clear-headed.

Turning setbacks into learning

How engineering postmortems foster real learning

In engineering, setbacks happen all the time—think a server goes down or a big bug freezes everything. Instead of blaming people, teams use what’s called a blameless postmortem. The point isn’t to assign blame, but to really understand what happened and how to stop it next time. For example, after a website crash, the team goes step by step, checks technical details, and focuses on fixes rather than finger-pointing. This makes it easier to learn from mistakes and not repeat them.

In my time as CTO in Berlin, we used blameless postmortems to uncover root causes of outages, which improved our systems and team morale. The method usually follows a few steps: describe what went wrong, lay out what happened in order, and get to the real reasons behind the problem. By keeping things judgment-free, postmortems open the door to real insight and improvement.

The structure of a blameless review

What makes a blameless postmortem work is its structure and safe atmosphere. Typical steps include:

  • Describe the event: what actually happened?
  • Map the timeline: when did each step happen?
  • Find root causes: why did this happen? What things led to it?
  • Spot what worked and what didn't: where did things break or go well?
  • Set action steps: what changes could help next time?

At the center is psychological safety. When people feel safe to speak up, they’ll talk about real issues, not just easy fixes. With this structure, it’s easier to find the true causes of a problem. This mindset isn’t just for engineering—it also helps solo tech professionals like me deal with setbacks without falling into harsh self-criticism.

Curiosity over criticism

A blameless approach encourages honesty and curiosity. Instead of hiding mistakes, I can look at what happened with an open mind. This leads to smarter fixes and a habit of constant learning, where new solutions matter more than being perfect. For practical thinkers, this is a relief—it lets me experiment and grow, even after a slip. It’s not always easy, but c’est la vie.

Why analytical thinkers find comfort in structure

Structure makes reflection approachable

If you have an engineering or science background, vague reflection can feel odd, like staring at a blank page with no code to write. My training in fundamental physics taught me to break down problems step by step, which I now apply to self-reflection. A step-by-step postmortem feels more familiar. It’s like a checklist: describe the issue, lay out the order, and ask why until you find a root cause. I often track how many small tweaks I implement after each review, using simple checklists to measure progress. This framework switches focus from fault to solutions, making things less overwhelming and more useful.

Turning pain into a problem to solve

Another plus: blameless postmortems turn emotional pain into a puzzle. Instead of getting stuck in shame, I can treat a setback like debugging a system. I ask, What went wrong in the process? not What’s wrong with me? This helps me move ahead with curiosity and energy for fixing things. Mistakes turn into tweaks, not personal failures—like changing one setting instead of redoing everything.

A systems view for personal growth

Seeing setbacks through a systems perspective lets me turn mistakes into chances to adjust how I work, not signs of failure. The attention shifts from blame to making helpful changes—tuning my habits, tools, or routines for better results next time. Here’s how I put this approach to use for my own growth.

How to run your own mindset postmortem

Start with neutral event logging

How I write about a setback shapes how I feel about it. I start with a plain, factual account—skip loaded words like failure or disaster. For example, I say, I missed the project deadline by 24 hours instead of I blew it. This style helps keep emotions cool and sets me up to learn.

It also helps to separate the event from my self-image. I use simple, clear words—like, The deadline was missed by one day—to ground my reflection in facts. That makes analysis more useful and less emotional.

A setback is something that happened, not who I am. This simple step can drop my stress right away and open the door to stronger thinking. Next, I put together a timeline.

Map your timeline and triggers

Laying out what happened before, during, and after the setback makes things clearer. I note key actions, decisions, or anything that played a part. For example:
- 3 days before: took on two new projects
- 1 day before: felt overloaded, worked late
- Day of: missed deadline, told client late

I look for repeating triggers or problems in my system. Often it’s things like saying yes to too much or having unclear lines—not personal defects. This shifting focus reduces self-blame and highlights practical solutions.

I don’t forget my environment or emotions. Was there a last-minute spike in workload? Was I tired, distracted? These overlooked details can reveal important causes. Now, I dig deeper.

Find root causes and reframe the story

To find the real problem, I keep asking Why? Was a missed deadline just about scheduling, or maybe about perfectionism, or not having clear project directions? Getting to the core makes good change possible.

I try to add some kindness here. If my friend was telling me this story, I’d likely support them, not criticize. This mindset makes honest learning easier.

Each setback is data, not judgment. Each mistake is a lesson about my processes and assumptions. I also look at what went right.

Highlight what worked and set small action steps

Even if things go off track, there are usually small wins. Maybe I kept my client in the loop or fixed a bug before launch. Spotting these boosts motivation. Now, I pick one or two bite-sized changes for next time, such as:
- Use a checklist before delivering work
- Be clearer about new commitments

I choose simple experiments, not huge overhauls. These micro-steps last longer and keep things light.

Each shift is an experiment, not a rule. The point is to learn, not fix everything right away. This attitude helps me keep moving without extra pressure. At last, I bring some closure.

Debrief and create closure

I take a minute to look at what I learned and how I feel. A short summary or a letter to myself can mark the end. Little rituals like these help my mind let go of stress.

Physical acts—like closing a notebook or taking a short walk—signal that it’s time to move on. These small gestures can help my mind release the event.

Closure isn’t about forgetting, but about freeing energy to handle what’s next. It’s about carrying the lesson, not the guilt. Here’s how this looks in practice.

Real-world mindset postmortems from indie tech journeys

Learning from a missed client call

One time, when I led a multicultural team in Beijing, I learned firsthand how structured reviews helped us bounce back from project setbacks without finger-pointing. But even on my own, the method works. I once faced confusion after missing key info during a client call. Rather than get lost in frustration, I wrote down the events step by step. This factual log kept emotions out, helping me see the situation clearly.

A closer look found the main issue was a lack of prep and a rushed day, not my skills. This shift in view showed that many problems start with the system, not the person.

I also noticed that my follow-up questions helped clarify things, which I counted as a win. Encouraged, I started using a checklist before every client call—a small tweak for ongoing improvement. This method also works just as well for bigger tasks.

Insights from a failed side project launch

When I founded a science popularization company, not every launch went as planned. Once, I launched a side project, but it just didn’t take off. To handle the disappointment, I tried a personal postmortem, writing down what I actually did, from idea to launch. This review helped explain the experience, instead of letting vague feelings take over.

Soon enough, I realized that weak market research—not lack of effort or skill—was the root cause. By reframing, I turned disappointment into a learning moment.

Even with no traction, there were still wins: a working product and new technical skills. For the next experiment, I decided to talk to three users before building again. Small lessons and steps like these help growth feel steady and real. Now let’s look at tools that make this self-review habit easier.

Tools for guilt-free reflection

Worksheet formats that make solo postmortems simple

Templates make running a personal postmortem less daunting. Each breaks the process into easy steps. Some helpful formats are:

  • After Action Review (AAR): Compare what was supposed to happen, what actually happened, and why there was a difference, then find lessons.
  • GROW Model: Covers your Goal, Reality, Obstacles/Options, and Way Forward.
  • Failure Postmortem Worksheet: Guides you to define the event, analyze causes, prevent repeats, repair, and set actions.
  • 5 Whys: Asks “why” several times to get to the bottom of the problem.

Another simple tool is the Win-Log: jotting down small victories each day or week, no matter how minor. This habit helps keep progress visible, especially when setbacks loom large. I keep a Win-Log on my desk, noting every small success, like finishing a tricky bug fix or getting positive feedback from a client. It’s a little boost on tough days and reminds me that progress is real, even if it’s not always obvious.

These templates offer structure and can ease the sting of setbacks by turning them into practical questions.

You can tailor any framework to fit your style. Step-by-step prompts keep things focused on learning, not blame, and make it easier to find action steps.

When I personalize a template—keep it conversational and flexible—it feels more doable. Here are some sample journaling prompts to get going.

Sample journaling prompts for solo tech workers

A calm, factual start helps. Prompts include:
- What actually happened?
- What was I expecting?
- What did I notice in the moment?

These questions keep me grounded. For root causes and changing my view, I try:
- What led to this outcome?
- What patterns do I notice?
- If a friend told me this, what would I say?

Kind prompts like these help honest analysis without harsh self-talk. For closure and next steps, I ask:
- What small change can I try next time?
- How can I mark closure on this and move forward?

These help absorb lessons and drop guilt. But I’m careful—reflection itself can turn into another chore, so I keep it light and kind.

Avoiding the productivity trap with self-compassion

When reflection turns into another metric

Perfectionism can creep into postmortems, too. If reflection becomes a box to tick or another thing to track, it loses its point. Instead of helping, over-doing these habits can add pressure, turning a growth tool into yet another stress.

It’s easy to slip into fixing every little thing, chasing an ideal version of myself. But real growth comes from curiosity and kindness, not endless hustle. Reflection should help my well-being, not become another scorecard.

After years of pushing through long hours, I learned that gentle self-review—not constant hustle—keeps me motivated. If postmortems start to feel like a burden, that’s a clue to pause or lighten up. Sustainable reflection means knowing when to pause, simplify, or skip a review when it isn’t useful. So, how do I keep it manageable?

Compassionate and sustainable reflection

Kindness and balance matter for lasting growth. Questions that encourage empathy go a long way—notice strengths, not just problems.

After moving from Berlin to Lisbon, I realized how important it is to set clear boundaries between work and personal time, especially when reflecting on setbacks. Balance what didn’t work with things I did right. This keeps motivation up and avoids feeling stuck or defensive. Consistency is better than intensity; quick, regular check-ins help build self-trust over time.

Short, frequent postmortems—done weekly or after a big event—work better than rare, deep dives. From experience in both teams and working alone, I’ve noticed that small, regular reviews stick far better than giant self-overhauls. These simple habits build resilience and make learning from setbacks feel lighter and natural.

Building antifragility through structured reflection

Turning mistakes into strength

Each structured, gentle review helps my mind see mistakes as fresh info—not threats. Over time, this rewires my reactions, making errors a bit like weights in a gym, building psychological muscle. Instead of shying away, I start to see each blip as a tool to grow. This links to the idea of growth mindset, where challenges build strength, especially when working solo.

Welcoming setbacks as experiments

As I build this habit, fear of mistakes fades, replaced with curiosity. Every issue becomes an experiment, a way to learn and adapt. This keeps me motivated and turns surprises into stepping stones for new projects. Small, frequent tweaks become normal, helping me stay healthy and creative.

Sustainable growth for solo tech professionals

Compassionate postmortems help guard against burnout, keeping me motivated for the long run. When setbacks turn into learning, solo work feels lighter and more doable. With this mindset, every challenge becomes another way to grow, no matter how bumpy things get.

Working alone in tech can make ordinary setbacks feel like big doubts, especially with high standards and no one to talk to. But the blameless postmortem approach shows that with structure and curiosity, even tough moments can become chances to learn. By breaking events down into facts, finding triggers, and focusing on small, clear changes, setbacks stop being about blame and start being about growth. Making a gentle reflection habit using templates, prompts, or a Win-Log keeps it all manageable and protects against burnout. Over time, this approach turns mistakes into stepping stones, building up my confidence for whatever comes next.

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SwitchUp
SwitchUp is dedicated to creating a smart assistant designed to oversee customer energy contracts, consistently searching the market for better offers.

In 2017, I joined the company to lead a transformation plan towards a scalable solution. Since then, the company has grown to manage 200,000 regular customers, with the capacity to optimize up to 30,000 plans each month.Role:
In my role as Hands-On CTO, I:
- Architected a future-proof microservices-based solution.
- Developed and championed a multi-year roadmap for tech development.
- Built and managed a high-performing engineering team.
- Contributed directly to maintaining and evolving the legacy system for optimal performance.
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Balancing short-term needs with long-term vision was crucial for this rapidly scaling business. Resource constraints demanded strategic prioritization. Addressing urgent requirements like launching new collaborations quickly could compromise long-term architectural stability and scalability, potentially hindering future integration and codebase sustainability.
Technologies:
Proficient in Ruby (versions 2 and 3), Ruby on Rails (versions 4 to 7), AWS, Heroku, Redis, Tailwind CSS, JWT, and implementing microservices architectures.

Arik Meyer's Endorsement of Gilles Crofils
Second Bureau Logo

Second Bureau
Second Bureau was a French company that I founded with a partner experienced in the e-retail.
Rooted in agile methods, we assisted our clients in making or optimizing their internet presence - e-commerce, m-commerce and social marketing. Our multicultural teams located in Beijing and Paris supported French companies in their ventures into the Chinese market

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