I know the exact feeling! Sometimes I'm paralyzed by the huge amount of choices of things I'd like to learn. It seems to carry across disciplines - I'm passiona

I know the exact feeling! Sometimes I'm paralyzed by the huge amount of choices of things I'd like to learn. It seems to carry across disciplines - I'm passionate about music and audio, and the more I read it seems the less I know, I start reading DSP books and then realize I've missed a lot of the math prerequisites and try to study that, then I'll get sidetracked looking at something like computer vision or computational geometry. It's nice to be familiar with all of these subjects, but I fall short of actually learning the material deeply or doing anything useful with the knowledge. I can't say I have great advice for you (or myself). Maybe we just need to look at things differently - being interested in things is a good problem to have, and having anxiety over it won't help. Also, committing on paper seems to help me sometimes - if I can focus on just doing the things I write down, I can get a lot done. It's like there's more time in the day when I actually have a schedule set.