Ask HN: How do you deal with learning anxiety?

There is so much to learn, so many interesting things to explore - that is just in software. Then there are bajillion things to learn in other topics that are not tech. But we have so little time, especially as we grow older.

How do you guys decide what to learn and what to ignore? How do you decide not to get anxious, not to feel like a dumb person/loser all the time, because you didn't know some specific info on a specific topic? And once you decide what to learn, how do you go about sticking with it and keeping yourself up-to-date?