getI'm Chris. I used to be the guy who quit by week three.
No naturally-gifted genetics, no bottomless 6am willpower — just a system that stopped relying on either. Four years later, I'm a UK-certified Level 3 Personal Trainer, and Built by Habit is the actual method I use.
Here's the honest version, not the highlight-reel version: I started and stopped more times than I want to admit. A few weeks of showing up, then a bad week, then a missed week, then the quiet decision that maybe the gym just "wasn't for me." That cycle repeated for longer than four years counts for — the four years is what happened once something actually changed.
What actually changed
It wasn't a better plan on paper. Plenty of my earlier attempts had a plan on paper. It was removing the number of decisions I had to make on a bad day. Which exercise, how long, what to do if a machine was taken, what to do after a missed session — every one of those used to be a moment where I could talk myself out of it. Once they weren't decisions anymore, showing up stopped being a daily negotiation.
The first three weeks of training before work were genuinely hard — every morning was an argument with myself. Then, somewhere in week three, it simply wasn't an argument anymore. The alarm went off and I got up. That's the whole trick: it becomes automatic before you consciously notice it changing.
That lines up with the research, not just my own experience — a UCL study following 96 people building new habits found it took an average of 66 days for a behaviour to start feeling automatic, and that missing a single day made no real difference to that process. I didn't know that study existed when I was living through it. I just noticed that the version of me who "forgot" to go stopped showing up, and the version who trained anyway even on a bad day was the one who was still here a year later.
Why the certificate matters to me
Four years of personal results told me the approach worked for me. It didn't tell me why it worked, or whether it would hold up for someone whose body, schedule or starting point looked nothing like mine. So I did the UK Level 3 Personal Training qualification properly — the anatomy, the programming principles, the injury-risk and progression rules that separate "this worked for me" from "here's why this actually works." Built by Habit is the meeting point of both: a system that's been lived in daily for four years, checked against what a real qualification says training should look like.
Why a book and an app instead of just 1-2-1
Direct coaching is the highest-touch version of this, and I still offer it. But most people don't need someone standing next to them — they need the friction removed and a plan they trust enough to actually follow. That's what the free app and the book are for: the same system, built so you can run it yourself. Coaching is there for anyone who wants a person checking in, not just a plan.
If any of the "started and stopped" part sounds familiar, that's exactly who Built by Habit is for. Not people who need more motivation — people who need a system that doesn't ask for it.
Where to start
Not sure which one fits? Take the 30-second quiz on the homepage, or jump straight in below.