Doing something. I don't fare well doing nothing, I am just not cut for it. And the happiest of all, when a task (small or complex) is completed to my satisfaction.

The hammock in the back yard, half asleep & listening to the neighbor's fountain.

Lemmy said it best:
"Cause I'm in love with rock 'n' roll, satisfies my soul
If that's how it has to be, I won't get mad
I got rock 'n' roll, to save me from the cold
And if that's all there is, it ain't so bad
Rock 'n' roll!"

Every place is my happy place, so I guess the inside of my head. I am not naive or some type of space cadet, but happiness is a choice. So I choose it. I get sad sometimes but never, ever stay that way.