These are from this article: http://successify.net/2012/10/31/22-things-happy-people-do-differently/
1. Don’t hold grudges
2. Treat everyone with kindness
3. See problems as challenges
4. Express gratitude for what they already have
5. Dream big
6. Don’t sweat the small stuff
7. Speak well of others
8. Never make excuses
9. Get absorbed into the present
10. Wake up at the same time every morning
11. Avoid social comparison
12. Choose friends wisely
13. Never seek approval from others
14. Take the time to listen
15. Nurture social relationships
16. Meditate
17. Eat well
18. Exercise
19. Live minimally
20. Tell the truth
21. Establish personal control
22. Accept what cannot be changed
Read the article. It goes into greater depth and detail.