You’re supposed to be embarrassed of your younger self—really. It’s a mark of progress. (It doesn’t mean you have to stay embarrassed, though.) It’s good because it means you’re able to look back and wonder, “How was I ever at that place?” indicating that you’re no longer there. I hope you never reach a point in which you look back on your younger self and think, “Wow, I had it all figured out!” That means you stopped growing. (And that means you stopped living.)