the "decision journal" setup that has made me measurably better at my job, and it's the simplest thing i do

sharing this because it's low-effort and it's the highest-compounding thing in my workflow. every time i make a decision of any consequence, i write a short entry. what i decided, why, what i expected to happen, what i was worried about, and what would tell me i was wrong. five minutes, tops, and it goes into one project. then, and this is the part everyone skips, i actually go back. every couple of months i ask it to pull up the decisions from the previous quarter and compare what i expected with what actu