I use my AI assistant where possible and quickly use the voice message to just dump ideas or anything that just pops up in my mind and It send them to notion notes as todos notes than every time I think what was I thinking about I go to notion and check the todos that I labeled nonsense for a reason

It's a famous problem, I've seen a a few tries at it, even tried my own, never saw any real solution. I think the issue of "looking back over the last few years" is the way.