Seems like there are two kinds of happy. There's the mood and then there is another kind that is harder to classify. You could call it gratitude, the big picture, beauty. The mood sort is real shallow because its based on your circumstance. The second kind doesnt have anything to do with you, so no matter whats going on in your life, its still there. Like taking pleasure in a rain storm. The joy of watching a rainstorm doesnt go away because your boyfriend left you. I feel the second kind of happiness even when I am depressed. I think this phenomena is partly what makes tradgedy so meaningful. I mean the literary kind though, not the slice and dice nightly news kind. In a tradgedy, no matter what happens there is something of infinite beauty revealed at the core even when all the "happiness" is stripped away. I've given up on the mood, and have taken refuge in the second sort.its been a huge relief.