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

Abstract:

The article argues that daily streaks in habit and health apps aren’t neutral motivators but brittle “availability models” that quietly assume every day offers the same time, energy, privacy, and control—an assumption that collapses for people whose desk-bound weeks routinely turn into 10-hour chair marathons, back-to-back Zoom walls, desk lunches, and “urgent” pings at 18:40 that spill work into the night. By scoring days as a binary 0/1, streaks erase context and treat “couldn’t” (travel, deadlines, sleep disruption, escalation days) the same as “didn’t,” creating guilt, all-or-nothing thinking, and a compounding “back to 0” loss effect where 20 good days out of 22 can feel like nothing; the problem isn’t habits or discipline, it’s the measurement layer that mislabels missing data as failure and rewards logging compliance over real capacity. The author proposes replacing fragile daily chains with metrics that fit volatile calendars—weekly totals, rolling 7–14 day windows, percent adherence over planned opportunities, and “minimum viable consistency” floor goals (like 8 minutes of movement, a short walk between meetings, or a protein-heavy desk meal) that keep the thread alive in degraded mode—plus resilience features like grace days and clear re-entry rules, so recovery is cheap and progress isn’t wiped out by one chaotic day.

A streak looks innocent. Just a little number that says you “showed up” today. But under the hood it’s doing something bigger. It assumes your days are comparable. Same time, same energy, same privacy, same control. Which is… cute, if your calendar looks like a crime scene.

If you work at a desk, you know the pattern. A 10-hour block where standing up feels like a negotiation. Back-to-back Zoom. Desk lunch. Then work spills into the evening because the “urgent” thing arrived at 18:40 like it owns the place. I’ve done desk years in Beijing, then Berlin, and now Lisbon, and somehow the same physics applies: by hour nine, the upper back is tight, brain is fried, and the day is not “a clean unit” anymore. On those days, the app still asks for a tidy daily check-in and keeps score with a binary 0 or 1. No context. No fallback mode. Just pass or fail.

This article is a forensic look at that measurement layer. Not a discipline lecture. Not anti-habit. The point is simple: when a system treats “couldn’t” and “didn’t” as the same event, it creates bad feedback loops and unnecessary guilt, especially during the exact weeks where your schedule is least compatible with daily perfection.

Here’s what we’ll cover

  • Why streaks are really an availability model disguised as motivation
  • How desk weeks get lumpy by default, and why that’s normal
  • What changes psychologically when the streak breaks and you’re “back to 0”
  • Why streaks often reward logging more than real capacity
  • Better scoreboards for real calendars, like weekly totals, rolling windows, percent adherence, and floor goals that still count
  • Red flags that predict a first-week collapse, and green flags that make returning cheap

If the goal is to feel better without adding yet another system to manage, the fix is often not “more motivation.” It’s changing what gets counted, so your progress survives messy weeks instead of being erased by them.

Streaks assume your days are comparable

The streak is an availability model

A streak looks like a simple counter, but it’s also a scheduling model dressed up as motivation. It assumes each day comes with roughly the same time, energy, privacy, and control. That stays invisible until the calendar gets ugly. It’s a classic counting trap: what’s easy to count is not always what matters. And streaks also happen to be a handy engagement mechanic for apps.

The damage starts with the 0 or 1 scoring. Real desk life has “day types,” and they’re not interchangeable:

  • Deep work days with no natural break, where you look up at 19:40 and realize you still haven’t stood up
  • Meeting-wall days on Zoom where even grabbing water feels like a risky move
  • Travel and time-zone days that turn “today” into three different days stitched together
  • Late Slack / late email days where the workday ends… after dinner
  • The “just 1 more thing” days that show up at 18:40 and eat your evening anyway

After-hours work also tends to mess with sleep, which makes the next day tighter again, not magically fresh.

Once a miss is labeled a violation, the feedback loop changes. A 12-hour escalation day and a deliberate “nah, not today” get recorded as the same thing. And when stress spikes, skipped health behaviors tend to spike too, so misses cluster right when life is least compatible with “daily.” A gap is not the same thing as quitting, but streak logic flattens everything into the same failure state.

This article isn’t anti-habit and it’s not a discipline lecture. It’s a look at the measurement layer. “Missing” should not automatically mean “failed.” Missing is sometimes just… missing.

Desk weeks are lumpy by default

Why bad weeks are normal, not a personal defect

A “bad week” in desk terms is often not a moral collapse. It’s usually a pile-up:

  • Deadline compression
  • A launch week
  • An escalation that eats the whole day
  • Travel and time zones
  • A calendar full of calls
  • Work bleeding into evenings until midnight becomes, how to say, standard operating procedure

Long hours also aren’t harmless. When stress spikes, next-day follow-through often drops even if intention stays high.

This volatility matters because habits run on cues. Quarter ends. Reporting cycles. Release weeks. Board prep. The Sunday “urgent deck.” If a tool requires uninterrupted daily continuity, it’s built for low-volatility lives, not for work that comes in waves. When context shifts, routines lose their grip more easily. That’s not you being broken. That’s the cue chain breaking.

So a week can be objectively decent and still look like failure in the app. In stable contexts, habits run on autopilot because cues repeat and the decision cost is low. In unstable contexts, the same behavior needs deliberate effort right when deliberate effort is scarce. That’s when streaks die, not when you “stopped caring.”

Say you have four late nights in a row, but you still get two solid workouts and mostly decent meals because you’re not totally surrendering to chaos. A daily check-in tool can label that week as a fail anyway. That’s a scoring problem. Even the language matters. “Interruption” is often more accurate than “failure,” because the gap is about feasibility, not character.

The first break

The compounding penalty of a broken streak

The “back to 0” mechanic is a design choice. It turns 20 good days out of 22 into… basically nothing, because the scoreboard stops reflecting the pattern. It feels like losing, not like being “mostly consistent.” And when the UI frames it as a loss, the brain tends to go “ok, then what’s the point.”

The interface becomes a binary switch: streak alive or streak dead. People copy that logic fast. Under all-or-nothing rules, a slip is more likely to trigger global self-judgment and escalation rather than a simple “missed, next” correction. Once progress feels erased, the frame moves from building to failed, and quitting can feel like the logical response to a tool that can’t show partial success.

Worth being modest here: clean evidence that isolates “streak UI” effects is thin. The argument is mainly about the mechanism. Binary scoring plus loss framing often makes recovery harder, especially when life is already volatile.

When a lapse becomes a story about you

Desk weeks are good at turning small gaps into big narratives.

You skip the workout because the meetings never end. Dinner happens at 22:30, so you grab whatever is fastest. Then you think, “today is already messed up,” so you keep snacking while answering late Slack, and suddenly it’s 00:40 and you’re annoyed at yourself. Not because one late dinner matters, but because the rulebook in your head flipped from “on plan” to “off plan.”

The skipped session isn’t the hazard. The meaning attached to it is.

This is why buffers matter. You want a system that makes returning cheap. Being a bit kinder to yourself helps here—not as softness, but because it reduces the shame spike that blocks re-entry. In systems terms, it keeps the loop alive when the week is messy, which is, honestly, a lot of weeks.

Streaks reward logging not real capacity

Heavy days run in degraded mode

Some days can handle a full strength session plus real cooking. Other days can barely handle “not nothing” between a 10-hour desk block, late calls, and dinner at 22:30. A resilient plan needs a maintenance mode that still counts.

Examples can be boring on purpose

  • 8 minutes of movement
  • a protein-heavy desk meal instead of “perfect macros”
  • a short walk between meetings, even if it feels almost too small to matter

This isn’t coping theatre. It’s just acknowledging load. Under peak load, good systems degrade gracefully. A streak system often demands full service daily, then treats overload behavior as failure. It counts the wrong unit.

The identity trap baked into a daily counter

Streaks invite “i’m a streak person” until the day it breaks, then it becomes “i’m back to zero.” For busy desk weeks, a break can be meetings, travel, sleep disruption, or plain tracking friction. The cause is often unclear, but the UI tells the same moral story anyway.

Minimum viable consistency beats fragile streaks

Keep the thread alive on messy weeks

Minimum viable consistency is the smallest version of the behavior that still counts when the week is on fire. The goal is not perfection. It’s lowering the re-entry cost so you don’t need a full reboot after disruption.

A missed day doesn’t delete everything you built. But in practice, once you skip once, skipping again gets easier. So it helps when the “default return” is small instead of heroic.

In tech terms, recovery wants an auto-retry with backoff, not a manual “start from scratch” wizard after every error. One simple tool is an if-then plan for the next disruption: If the day explodes, then I do the floor version and move on.

Metrics that survive volatile calendars

Weekly framing is closer to how most people actually live, desk jobs included. Instead of a daily counter, options that map better to real life include

  • Weekly totals aligned with weekly targets
  • Rolling windows like last 7 days or last 14 days, which smooths travel and deadline spikes
  • Percent adherence completed over planned opportunities, which doesn’t punish you for having fewer slots that week

If you still like streaks, there’s a safer variant: add forgiveness. Grace days and freezes can be genuinely helpful because they preserve continuity and reduce the shame spike after an unavoidable miss. Just don’t treat them as magic. Treat them as recovery features.

How to spot brittle scoreboards

Red flags that predict a first-week collapse

Messy weeks are predictable under stress spikes, so a plan that only works in ideal conditions is basically a plan with no degraded mode.

Common red flags

  • daily check-in or nothing counts
  • back to 0 after 1 miss
  • travel treated as a lapse
  • only 1 intensity is valid
  • no maintenance mode option
  • compliance and failure language
  • punishment badges or shame copy
  • ignores schedule volatility

A bright line gets crossed, then the system leaves you alone with “I blew it” as the default explanation.

Green flags that survive real calendars

You can spot resilience in the scoring and the language. Resilience is not disruption avoidance. It’s disruption plus recovery, measured by how fast you return.

Green flags

  • weekly totals, not daily chains
  • rolling last 7 or 14 days
  • percent adherence over opportunities
  • a floor goal that still counts
  • maintenance mode for crunch weeks
  • a simple re-entry rule
  • uses gap or interruption terms

If a tool interprets normal schedule volatility as failure, it will collapse at the first crunch, and sometimes you’ll quit the tool rather than quit the behavior. Fix the measurement model, and you fix the recovery loop. Durable systems degrade gracefully.

Here’s the desk-version of a “streak break” that isn’t a personal failure: six hours of calls, a 30-minute gap that gets eaten by an “urgent” request, then late Slack while you’re trying to figure out dinner. The streak system asks for the full ritual anyway, and when you don’t do it, it records a clean zero. A floor-goal system records what actually happened: you kept the thread alive in a week that was not built for perfection.

Better measurement is not about being nicer. It’s about using a scoreboard that doesn’t erase progress the moment your calendar does what calendars do.

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25 Years in IT: A Journey of Expertise

2025-

Nook
(Lisbon/Remote)

Product Lead
Building the future of health coaching. Leading product development and go-to-market strategy for a platform that makes personal wellness accessible through natural dialogue.
Making health coaching feel like talking to a friend who actually gets you.

2024-

My Own Adventures
(Lisbon/Remote)

AI Enthusiast & Explorer
As Head of My Own Adventures, I’ve delved into AI, not just as a hobby but as a full-blown quest. I’ve led ambitious personal projects, challenged the frontiers of my own curiosity, and explored the vast realms of machine learning. No deadlines or stress—just the occasional existential crisis about AI taking over the world.

2017 - 2023

SwitchUp
(Berlin/Remote)

Hands-On Chief Technology Officer
For this rapidly growing startup, established in 2014 and focused on developing a smart assistant for managing energy subscription plans, I led a transformative initiative to shift from a monolithic Rails application to a scalable, high-load architecture based on microservices.
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2010 - 2017

Second Bureau
(Beijing/Paris)

CTO / Managing Director Asia
I played a pivotal role as a CTO and Managing director of this IT Services company, where we specialized in assisting local, state-owned, and international companies in crafting and implementing their digital marketing strategies. I hired and managed a team of 17 engineers.
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SwitchUp Logo

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.
Challenges:
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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Please be aware that the articles published on this blog are created using artificial intelligence technologies, specifically OpenAI, Gemini and MistralAI, and are meant purely for experimental purposes.These articles do not represent my personal opinions, beliefs, or viewpoints, nor do they reflect the perspectives of any individuals involved in the creation or management of this blog.

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