When I started my current position (my first as a developer), I was given a company notebook that I use as a learning log. For each PR I write a bullet point or

When I started my current position (my first as a developer), I was given a company notebook that I use as a learning log. For each PR I write a bullet point or two of things I learned/mistakes I made in creating the PR. I go through it every so often to look for patterns, and use them to focus my learning. It helps avoid repeating mistakes, and makes my professional development much more directed/intentional. I prefer keeping the learning log in a notebook than on the computer, as looking for patterns requires me to review everything I've written. I've found that unexpected connections pop out at me when I do that.