Out of curiosity, how "excellent" is your life? Are you in the top 25 of your profession?
I enjoy my life, thank you (How's yours?). As far as my shortcomings go (and there are quite a few), I try to work on bettering myself in many areas. As I already said, I recognize that perfection is impossible. However, I sure as hell don't sit on my arse making the same mistakes over and over while comforting myself that "it could be worse."