Paul's Tips has some witty tips for people that feel unhappy or depressed.
1. Go out for a walk
Do so for at least half an hour. You'll be amazed how much better it will make you feel.
2. Do something fun that you haven't done in a long time
Nothing excites quite like something new. So go out and do something fun that you haven't done for a while, or even something that you haven't ever done before. Make a day of it.
3. Do something creative
We are creative beings. Among humanity's first achievements were artistic - painting in caves, telling stories, making music, preparing nice food.
4. Complete some minor chore that you've been avoiding
Tidying and cleaning a dirty room is no fun. But, the feeling of satisfaction and achievement that comes with looking at the result can really lift your spirit.
5. Get in contact with an old friend or acquaintance you haven't seen for a while
You've got their number or email address and you know you really should have contacted them by now. So do it already!
More at Paul's Tips site [via Lifehacker].