Writing the Irrefutable Rules for Happiness

I believe that there is a short list of Irrefutable Rules for Happiness. I might even know what some or all of those rules are. Maybe not, though. Maybe I am forgetting something or getting something a little wrong.

Here is the first draft of my "Irrefutable Rules for Happiness."

1.    Take responsibility for your own happiness.
2.    Have a plan for dealing with unhappiness.
3.    Be low maintenance and easy to get along with.
4.    Do not let what others do or think affect your mood.
5.    Realize that unhappiness has never made anything better.
6.    Be the best person you can, every day, and be satisfied with that.
7.    Look for the positive in any situation.
8.    Focus on others, rather than yourself.
9.    Find reasons to laugh and smile.

What do you thin should be on the list? What am I missing or what did I get wrong?

Seriously, I would love to get some help in creating a list of real value.