Don't let it get to you.

Um actually, wait a sec.... Here we go.
“Letting it get to you. You know what that’s called? Being alive. Best thing there is. Being alive right now is all that counts.”
— The Doctor, Season 6, Episode 4

That's one of the things I like about the show. Like Sienfeld or The Simpsons, it has a quote for absolutely any situation.

With great power comes Awesome irresponsibility.