HEY HABIT TRACKER BLOG
By Mary Jones | March 12, 2026 | 5 min read
Tags: habit loop, breaking habits, behavioral science, addiction, caffeine
Part 2 of 4 in our Build Habits That Stick series
In Part 1, I told you how a crush on a hot guy accidentally turned into a 40-year exercise habit. Today let’s talk about why that worked—and what to do when you’re trying to break a habit instead of build one.
The Loop That Runs Everything
Charles Duhigg wrote a whole book about this—The Power of Habit—and the core idea is beautifully simple. Every habit, whether it’s biting your nails or running three times a week, follows the same three-step neurological loop:
The Cue — something triggers your brain to go on autopilot. A time of day, a place, even a feeling.
The Routine — the actual behavior. The thing you do.
The Reward — the payoff that makes your brain think, “yeah, let’s do that again.”
In my case? The cue was knowing he'd be waiting at the trail after work. The routine was dragging myself there after a long day in the lab — exhausted, beyond sore, and not remotely in the mood to run (anticipating feeling the bone-on-bone agony, let me remind you). And the reward was... well, him. For a while, anyway.
But rewards can evolve—and honestly, they need to, because external rewards have a way of... leaving. (The marriage lasted 15 years.) Eventually the soreness went away. My body adapted, and the reward shifted. It stopped being about a person and became about a feeling. Post-run clarity. Energy. The quiet confidence that the day’s problems were solvable. The loop didn’t change. The reward did.
Breaking Habits: The Harder Problem
Everything I covered in Part 1 was about building habits. But breaking them? That’s a different beast. Building a habit means creating a new loop from scratch. Breaking one means you’re fighting a loop that’s already wired in, running on autopilot, and your brain likes it. That’s a much harder fight.
Duhigg popularized the idea that you can’t just delete a bad habit. Your brain doesn’t work like that. You have to swap the routine while keeping the cue and reward intact. Which is why “just stop doing that” has never worked for anyone, ever, in the history of human behavior.
Say you want to cut back on caffeine. You’re not just battling the physical dependency (though that headache on day two is very real). You’re battling the loop. The cue might be sitting down at your desk in the morning. The routine is grabbing a coffee. The reward is that warm, focused, “okay now I’m a functioning person” feeling. If you just white-knuckle it and skip the coffee, you’ve ripped out the routine but left the cue and the craving for the reward fully intact. Your brain is going to scream at you.
Duhigg’s argument—and this is backed by a lot of addiction research—is that you’re better off replacing the routine instead of eliminating it. Same cue (sit down at desk), new routine (make herbal tea, or take a short walk, or do a breathing exercise), same reward category (that “I’m awake and ready” feeling). You’re not fighting the loop. You’re redirecting it. The point isn’t that the replacement is as satisfying as the original. It’s that your brain has somewhere to go when the cue fires, instead of a void where the old habit used to be.
Alcohol works the same way but with higher stakes, because the reward is chemical and social and emotional all at once. The “wind down after work” cue is powerful. The relaxation reward is real. Telling yourself “just don’t drink” ignores the entire architecture of why you were drinking in the first place. This is why programs that work—AA, SMART Recovery, therapy—all focus on building replacement routines and new reward systems rather than sheer willpower.
Bottom line: building a habit and breaking one are two sides of the same coin, but breaking one is harder because you’re not starting from zero—you’re overwriting existing code. Be patient with yourself. And don’t try to do it through elimination alone.
THE BOTTOM LINE
Every habit is a loop: Cue → Routine → Reward. To break a bad habit, you don’t delete the loop—you redirect it. Keep the trigger and the payoff, swap in a new behavior in the middle.
Next week in Part 3: The cheat sheet—tiny habits, habit stacking, and what to actually do tomorrow morning.
Sources
- Duhigg, C. (2012). The Power of Habit. Random House. Stanford overview
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