Ha! I love that movie. I also love that guy. The sorrow he has in his face is sad but hilarious.
As for your question. There is no simple answer, but one thing you can try is to get into some spiritual teaching that focusses on finding more peace in your everyday life, and accepting who you are. The mind and ego can be nasty things that trap us, constantly judging ourselves and others, comparing, finding inferiority and superiority, but this unconcious behavior can be dissolved or greatly diminished. I can't say I'm truly the best student of this teaching because if I was I probably wouldn't be on this site anymore, but at times when I find myself overrun by thoughts and emotions it greatly helps me to move on from it.
If you want, I can pm some Youtube video's with some spiritual teachings that I watch.