I used to think logging my meals took discipline. It doesn’t, not really — not the way I used to picture it. What it actually took was a trigger I couldn’t skip.

For the first six weeks after I started building what became ZeroToHero (zerotoherofit.com), I logged breakfast and lunch almost every day and missed dinner close to half the time. Dinner wasn’t harder to log — a photo takes four seconds. It just wasn’t attached to anything. It floated out there as a thing I was supposed to remember, and by 7 p.m., tired and with the kids loud in the kitchen, “remember” is exactly what fails first.

Then I ran into the idea of habit stacking: a new habit sticks fastest when you bolt it onto something you already do on autopilot. So I stopped trying to remember to log dinner and tied it to something I do every single night without exception — pouring a glass of water before I sit down at the table. Glass of water, phone out, photo of the plate. Same order, every night.

My dinner logging went from roughly 50% to 96% over the following month. I didn’t get more disciplined. I just removed the step where I had to remember I was supposed to do something.

I did the same thing with weigh-ins. I used to step on the scale “most mornings,” which in practice meant three or four days a week — usually whichever days I already felt decent about how I looked. That’s a bad way to collect data; you’re only measuring on the days you expect good news. I moved the scale out of the closet and set it down directly in front of the coffee maker. Now I weigh in while the coffee brews, every morning, good day or bad. The numbers got less flattering for about two weeks. Then they got a lot more useful, because for the first time they were actually representative.

The pattern behind both fixes is the same: I stopped asking “how do I make myself do this” and started asking “what am I already doing, without fail, that this can attach to.” Willpower is a bad foundation because it runs out — usually right around 3 p.m., in my experience. An anchor habit doesn’t run out. The coffee maker doesn’t care how tired I am.

It’s also why I built ZeroToHero (zerotoherofit.com) around a photo instead of a search-and-log food database. A four-second photo can get stacked onto an existing habit without much friction. A two-minute search through a database can’t — there’s too much resistance for a stack to survive it. If the new action takes longer than the old trigger, you’ll drop the action long before you drop the trigger.

If you’re trying to build any kind of tracking habit — food, water, workouts, sleep — I’d stop hunting for more willpower and go looking for the anchor instead. What do you already do daily, at roughly the same time, without having to think about it? Coffee. Brushing your teeth. Sitting down at your desk. Plugging in your phone at night. Pick one, and attach the new habit to it in the same physical spot if you can. Don’t let it float on its own.

I started this at 232 pounds. I’m down to 208 now, and none of that came from a month where I white-knuckled my way through more logging by sheer willpower. It came from months where logging was already halfway done before I’d made a single decision about it — because I’d already picked up the water glass, and the phone was already in my hand.

That’s the whole trick, really. It was never about wanting it enough. It’s about not leaving yourself a decision to make in the first place.