Ask HN: How do you take notes at work?

I recently got into the habit of writing down what I've done at work each day, but found after a few months of daily journaling there are lots of days that I never revisit. I try to keep track of important links and learnings, and started making some bespoke pages like "How do I .... [insert action here?", which proved useful, but figured I'd ask here what types of things they found useful to write down. I know some people prioritize their to-dos at the top of each journal page. I tried writing down what I learned each day and that was useful for a while.

Interested to hear what people have to say. Thanks!

P.S. I use OneNote for this but since it's mostly text theoretically I could use anything