1. Believe there’s an upside to everything — look for the funny things all around you. People who laugh have a more positive outlook on the world and are generally in a better mood.
2. Fake the laughter until you feel like laughing. Scientific studies have proven that your body doesn’t know the difference between fake and real laughter. So fake it to you make it.
3. Engage with others in activities that generate laughter – go to funny movies, tell each other harmless jokes, share funny stories. Remember to be kind, though. Laughing at someone’s expense is not mirthful laughter, just cruel.
4. Make eye contact with others – start smiling and then create a gentle laugh. Turn up the volume of your laughter until 
you are laughing out loud. Everyone around you will join in. Eye contact is important to connect you to other people.
5. If you just can’t get started smiling, hold a pencil between your lips, with the tip of the pencil pointing to your left. This forces your mouth into a smile. If you sit like that for a few minutes and don’t feel like laughing, go look at yourself in the mirror. If you still don’t feel like laughing just fake it!
6. Keep happy company. If there are people in your life who bring you down, avoid them if at all possible. Dr. Gene Landrum, talks about studies that put optimists and pessimists together. After a short period of time, the optimists were less optimistic and the pessimists more positive in their outlook. The lesson is that if you want to feel better, get with happy people; if you stick with morose, depressed people, you are going to feel worse.
7. Be brave. Take the risk to be silly from time to time. Wear a crazy hat or shirt, and don’t worry about what other people think. If you’re a habitual laughter, you’ll probably outlive them!
8. Spend time with children. Children laugh on an average of 400 times a day, they laugh because it feels good.
9. Watch funny movies.
10. Go to an animal shelter or a pet store and feel their unconditional love flowing to you. You can’t help but feel good.