What It Means
The habit loop is the three-step pattern Charles Duhigg uses in The Power of Habit to explain how habits run. A cue sets it off and tells the brain to switch to autopilot, the routine is the behavior itself (physical, mental or emotional), and the reward is what tells the brain the loop is worth remembering. Repeat the loop enough and the cue starts the routine with very little thought.
Try It: Take a Habit Apart Into Its Loop
Pick a habit to see it split into cue, routine and reward, plus one possible swap. These are examples; your own loop may differ.
The car stops
The afternoon slump
Lights off
Pick up the phone
Walk to the vending machine
Open social media
Something new to look at
A break and a chat
Winding down
Phone goes in the glove box; turn on a podcast before you drive.
Walk to a coworker's desk for five minutes instead.
Read a few pages of a paper book.
How People Say It
- "What's the cue for that, though?"
- "The reward is the break, not the cookie."
- "I kept the trigger and changed what I do after it."
The Breakdown
The three parts
| Part | What it is | Example |
|---|---|---|
| Cue | The trigger that starts the automatic behavior | Getting home from work |
| Routine | What you do, which can be physical, mental or emotional | Opening a bag of chips |
| Reward | The payoff that tells your brain to remember the loop | Feeling done with the day |
How to change a habit you don't want (Buhata's own steps, built on Duhigg's keep-the-cue-and-reward advice)
- Write down the routine you want to change.
- Watch for the cue. Each time the urge hits, jot down what was happening just before.
- Name the reward. Ask what the routine gives you: a break, company, energy, relief.
- Keep the same cue and the same reward, and put a new routine in the middle.
- Write a plan: "When [cue], I will [new routine] because it gives me [reward]."
Short version to try today. Pick one habit you'd like to change and, the next three times it happens, jot down what came right before it.
Where It Comes From
Charles Duhigg set out the habit loop in his book The Power of Habit, published by Random House in 2012. His own site offers the book's reader materials and two flowcharts, one for creating a habit and one for changing one, both built on cue, routine and reward.
Good to Know
Duhigg's advice for changing a habit is to leave the cue and the reward alone and replace only the routine, because the old trigger and payoff are still there. That's why the first job is noticing: a routine is hard to swap until you know what sets it off and what you're getting from it.
FAQ
What are the three parts of the habit loop?
Cue, routine and reward. The cue triggers the behavior, the routine is the behavior, and the reward teaches your brain whether the loop is worth repeating.
Who came up with the habit loop?
Charles Duhigg describes it in his 2012 book The Power of Habit, where he uses it to explain how habits form and change.
How do you break a habit loop?
Duhigg's approach is to keep the cue and the reward and change the routine in between. You first find what triggers the habit and what reward it gives you, then choose a new routine that gives the same reward.
Do It in Buhata
Habit streaks (Plus) and Notes (Premium)
Write your cue, routine and reward in Notes (Premium) in Buhata, then add the new routine to Habit streaks (Plus) and tick it each day you do it.
Open BuhataRelated Terms and Categories
- Keystone habit
A habit that tends to set off changes in other habits, such as regular exercise leading to better eating, as described by Charles Duhigg.
- Habit stacking
James Clear's name for building a new habit by tying it to one you already do, using the formula "After I do my current habit, I will do my new habit."
- Habit tracker
A simple record, on paper or in an app, where you mark each day you do a habit so you can see your progress at a glance.
- Implementation intention
An if-then plan that ties a goal to a specific moment: "If situation X happens, then I will do Y."
Sources
Charles Duhigg, "The Power of Habit" (charlesduhigg.com); Charles Duhigg, The Power of Habit teacher's guide and reader materials (Random House, 2012); Charles Duhigg, "How to Change a Habit" flowchart; Charles Duhigg, "How to Create a Habit" flowchart
- charlesduhigg.com/the-power-of-habit
- charlesduhigg.com/wp-content/uploads/2025/01/Teachers-Guide-Duhigg-Power-of-Habit-Study-Guide.pdf
- charlesduhigg.com/wp-content/uploads/2025/01/Duhigg-Flowchart-How-to-Change-a-Habit.pdf
- charlesduhigg.com/wp-content/uploads/2025/01/Duhigg-Flowchart-How-to-Create-a-Habit.pdf
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