I grew too impatient, waiting for the page to load. So here are my own ideas for happiness:

1. Get enough sleep.

2. Avoid debt

3. Control allergies. Allergies increase the pressure of the fluid which bathes your brain, and that makes you irritable.

4. Make music. Yodel while cleaning the kitchen.

5. When somebody makes a joke, laugh. They will love you for it.

6. Never marry someone who doesn't get your jokes.

7. If you don't have children, get a pet. Not a goldfish, a sociable pet such as a dog or cat.

8. Grow flowers.

9. Keep your car's windshield clean.