Sometimes, all you need is one hour to talk to a friend who in some ways knows you better than you know yourself to honestly tell you how life is, how you're feeling, and assure you that you'll be all right.
Playing guitar, eating frozen yogurt, and marathoning random Community episodes doesn't hurt either.
I think Jeff Winger put it well when he said: "I would do anything for my friends, which I think is how everyone in the world feels. Which is why I finally understand war."