Self-trust is built with small promises kept: one run, one page, one early night.

Believing yourself is evidence-based, and the evidence comes from your own track record rather than from encouragement. Every time you say you will do something and then do it, the file gets slightly stronger, and every time you do not, it weakens. Confidence is mostly a memory of having followed through.

Make the promises small enough that you will definitely keep them, even on a bad day. Keep them exactly rather than approximately, since the point is the record and not the result. Increase the size only once the smaller version has been kept for a while.