http://www.thedailybeast.com/articles/2013/02/06/6-new-ways-to-be-happy-if-you-believe-the-studies.html

Here they are:

1. Be gay
2. Be powerful
3. Have great sex the first time around (dummy)
4. Desire things but don’t buy them
5. Don’t look at pictures of your stupid, happy friends
6. Eat your fruits and vegetables.