I'm sure these things have already been mentioned but just in case, here's what I try to do:

- Read some quotes or song lyrics and find one that helps you feel better.
- Go For A Walk.
- Watch a funny clip from your favourite TV Show On YouTube or Watch a Funny DVD.
- Listen to a song that means something to you.
- Call a friend.
- Laugh. Even if you have nothing to laugh about.
- Scream into a pillow.
- Try and work 3321.4 divided by 48.1