"I was thirty years old before I learned how to learn things. Nobody has ever taught me. Either I could do things or I couldn't, and there was never anybody who explained to me that no, you have to study. You have to fail. And keep failing better (and trying different things and researching and stuff) until you're not failing any more."
Mostly martial arts for me. Particularly the part where I didn't think I was especially talented* and I kept doing it anyway because I thought it was worthwhile.
* In retrospect, while not untrue, a lot of this was struggling with physical issues.