When you've lost your faith in humanity what restores it?

It is official, I have lost my faith in humanity. My cynicism of officially ruling and I have lost all faith in people. Things aren’t horrible, life isn’t closing in; I just look around at the choices people make that impact others in a negative way, shake my head, wonder, and proceed to get more and more jaded. So when your optimism runs out and you lose your faith in humanity, what do you do to get it back?

Disclaimer: I am not looking for a “cheer up the mouse” thread, just interested to hear what others do when they find themselves in this place.