I pretended to be the stronger conversational counterpart for the first twenty minutes, but soon my voice broke with the irony of my own advice. But I'm serene and grateful again. I don't know what DSM-IV criteria I meet, but there's surely something a little bit off balance. Inwardly bipolar , I would say, if such a diagnosis exists, since on the outside my composition rests unscathed.
Anhedonia makes much more sense in the context of depression.
However, I don't consider myself depressed in any major way. My sleeping patterns are roughly regular, all-nighters aside. I'm happy more often than not, and even when I'm not, my disposition does not incapacitate me in any significant way. On the other hand, my hyperactivity might simply superficially conceal or temporarily hinder the underlying dispositions. Perhaps Selingman has the solution with Positive Psychology.