"But I don't feel that Wimbledon changed me. I feel, in fact, as if I've been let in on a dirty little secret: winning changes nothing. Now that I've won a slam, I know something that very few people on earth are permitted to know. A win doesn't feel as good as a loss feels bad, and the good feeling doesn't last as long as the bad. Not even close."
--Andre Agassi, Open: An Autobiography
Agassi is referring to the "negativity bias," the phenomenon that means that generally, bad is stronger than good. Alas.
Stay tuned; I'm going to write more about Agassi's autobiography. It's fascinating for many reasons--and I don't even like tennis.