Hmmmm....doing something good, at least to me. Or finding out something really interesting r perhaps finishing something? A lot of things make me happy, well on the inside, I'm kind of a brick wall on the outside XD XD XD
Honestly? Singing spirituals in choir or on my own. Singing in general, really, but there's something very uplifting about spirituals. Look up/download the song "All My Trials" (not the Paul McCartney folk song) if you get the chance. It has a very sad theme, but it helps improve my mood whenever I hear it.
anything that does boil my piss. and theres pretty much nothin that boil my pee so im pretty much allways happy. you should try it! but what makes my happy is gaming, nice people, nice music etc. people fighting makes my sad, and right now that happpens a lot in my home(some sotta fase) yet im the only one that keep really uptimistic. oh yea i also get happy when i get good grades. got a A++ once for a superb gamereview of bioshock!!1!)