I decided to add to this too if I can. For me, happiness is:

Being able to play holiday songs at winter concerts without constantly worrying about what people will think (resulting in a bad performance).

Giving my best friend of 10 years a birthday present for the first time.

Being able to watch and enjoy rated R movies.

Not being afraid of knowledge and learning new things.

Realizing I have the freedom to do whatever I want with my life, and that the boundaries set by the Borg only exist if you let them exist.

Nothing is true, everything is permitted.