There is no magic pill that will make you happy, however, there are some simple steps that you can take toward happiness:
1. Find ways to stop worrying such as not taking on other's problems as your own. Only handle what is within your control.
2. Quiet your mind such as through meditation.
3. Try to get some exercise and take care of your health.
4. Learn to play and have wholesome fun.
5. Simplify your life.