Definition
Two-minute rule is James Clears prescription that any new habit be scaled down, on the page and in practice, to a version that can be done in two minutes or less. "Read before bed" becomes "read one page." "Run three miles" becomes "put on the running shoes." "Write the report" becomes "open the document and write one sentence."
The point is not to perform a two-minute habit forever. The point is to make the entry into the behavior so low-friction that the practitioner can do it on bad days, busy days, and unmotivated days — and from inside the two minutes, often continue.
Why it matters
How it works
Behavior change is gated by the start. Once the practitioner is in motion, continuing is easy; stopping has its own friction. The two-minute rule moves the focus from "completing the task" to "starting the task," because starting is what the brain will refuse and continuing is what it can usually be persuaded to do.
The rule also protects the habit during the period when it has not yet crossed the habit line. Two minutes a day produces enough reps to keep the wiring alive even when life is loud, so when conditions improve the habit is intact and can be scaled. The opposite — quitting when a full session is impossible — restarts the wiring from scratch every time, and most habits never finish that climb.