Happiness for me is just having the people around you that you love/love you. I mean, at the end of your life, it isn't going to be the money and career standing next to your death bed showing you love....it's gonna be the people in your life.
On a non-people level though, I make wine. I love wine, I love grapes, I love the soil and everything having to do with it. Happiness is being able to wake up and tend those vines, hoping some horrible storm isn't going to come along and wipe everything out, haha. In the fall, my friends and family come out and help me pick and crush the grapes, and that's a pretty sweet experience. We eat, we drink, play a few games....it's family. More importantly, it reminds me of the very Italian upbringing I've had...family is everything.
so, it's a bit on the cheesier end of things, but I think that's happiness for me. :-)