The minimum useful README

I trust monorepos more in the second year than I did in the first. Most of the early friction goes away once the tooling catches up.

I write smaller commits than I used to. The commits are uglier in isolation and much easier to read in sequence.

I keep a small log of decisions in a text file. Not architectural — just small ones. "Picked X over Y because Z." Future me reads it more than I thought he would.

When a system surprises me, my first instinct used to be to fix the surprise. Now my first instinct is to figure out which mental model of mine was wrong, and update that.