Make progress easy enough to repeat before making it impressive enough to announce.

There is a temptation to make the first version of a new effort dramatic, because that is what feels like commitment. Dramatic versions rarely survive a bad week. Building something you can repeat easily, even if it is unimpressive, gives you the one thing that actually matters early on, which is a pattern that keeps existing.

Set your initial commitment at a level you could keep on your worst day. Fifteen minutes rather than two hours. Once it has held for a month and stopped requiring decisions, you can raise it, and by then the raising is cheap.