ReefThe habit stacking formula is "After [current habit], I will [new habit]". James Clear describes it in Atomic Habits and credits the method to BJ Fogg, whose Tiny Habits recipe starts with "After I ..., I will ...". The existing habit is the cue, so the new one has a fixed moment in your day. Sources read on 24 October 2026.
How to build a habit stack
- Pick a habit you already do every day without thinking, at the moment you want the new habit: pouring coffee, locking the door, brushing your teeth.
- Add the new habit right after it, small enough to do in a minute or two at first.
- Chain more habits only once the first one sticks: each completed habit becomes the cue for the next one.
- Print the stack and keep it where the anchor happens: by the coffee machine, on the door, on the mirror.
Choosing a good cue
James Clear gives three tests for the anchor, in his habit stacking article (read on 24 October 2026):
- Specific and immediately actionable: "after I pour my coffee" beats "in the morning".
- Same frequency as the new habit: a daily habit needs a daily cue.
- At a time you are likely to succeed, not when you are usually busy with something else.
Example: a morning routine stack
A morning routine checklist works well as a stack, because each step starts the next one:
- After I turn off my alarm, I will drink a glass of water.
- After I drink a glass of water, I will open the curtains.
- After I open the curtains, I will stretch for two minutes.
- After I stretch for two minutes, I will write my top three tasks for the day.
Questions
What is habit stacking?
A way to start a new habit by doing it right after a habit you already have. The formula is "After [current habit], I will [new habit]".
Who came up with habit stacking?
James Clear popularised the term in Atomic Habits and credits the method to BJ Fogg, who calls the existing habit an anchor in his Tiny Habits method.
How many habits should a stack have?
Start with one or two. This planner allows up to six, but each new step is easier to keep once the one before it has become automatic.
Is my stack saved?
Only in this browser, on this device. Nothing is sent to Reef or anyone else.
Sources
- James Clear, How to Build New Habits by Taking Advantage of Old Ones (habit stacking)
- BJ Fogg, Tiny Habits recipe (After I ..., I will ...)
Read on 24 October 2026.
Keep the stack going
Track every step in Reef
In Reef, every completed habit earns a pearl, grows your reef and brings new creatures to life. Reef is free to start, with up to six habits, no ads, on iPhone and Android.