I started just writing it down in the Notes app included with macOS as a list and mostly keep it in my head. I guess I try to look at it at the beginning of the year and see what I achieved but it's mostly bigger generic points ("get raise to be over $amount", "sign up for $class").

I don't think there's much value in micro-managing your life, especially if a lot of things are out of your hand and there's not really a good way to measure progress. Writing down some top-level goals and keeping them in mind feels helpful to me and I don't think a specific tool or task managing methodology is needed there.