Other people have covered in detail different approaches to learning, so I figured I'd mention a weird thing that's been helpful for me, in case it's useful. W

Other people have covered in detail different approaches to learning, so I figured I'd mention a weird thing that's been helpful for me, in case it's useful. While learning, I try to split off a little piece of myself into a sort of adversary, whose job it is to get me to do basic problems / tasks, in order to demonstrate that I don't remember as much as I think I do. This might happen in the form of spending an hour one morning leafing through older material, and setting aside things for me to solve / re-prove. It's pretty simple, and I take some kind of perverse joy in finding areas where I thought I would remember much better.