I am a bit astonished by my progress as a math student over the past few years. It's not so much that I've learned a lot of math as that I've picked up a lot of skills I never had before. I now know how to read a math textbook (i.e., with pencil and paper, writing things down). I approach homework quite differently. I study. I am much better at tackling problems I'm not sure I can do than I was in the past. I am better at writing proofs. I know more Greek letters than ever before. And so on.
Life is good, I tell ya.