Related to taking tiny steps, I've set up a daily habit checklist with the lowest bar possible, even lower than the author's suggested log statement. When it comes to software dev, it's just "open my IDE and look at my notes for what to do next". This usually just takes 10 seconds, but it's the first step in starting and usually leads to me doing at least a bit more, so it's helpful when I'm at my lowest in terms of energy. And even if I do nothing else, I get some satisfaction that I at least completed my to-do and did a tiny bit more than nothing for the day.