I've no doubt that in the face of depression and anhedonia, pure hedonism can look like a magic pill. As it would simply be replacing one set of problems for another, in taking on this fantasy world where you are somehow unaffected by behaving without regard for the ethical treatment or welfare of others, I sincerely hope the OP is rethinking the role hedonism could play in either recovery or in meaningful ongoing satisfaction.

Really, a little hedonism just between friends goes a long way anyway, can be perfectly beautiful without becoming tainted with the contexts of achieving superiority to others, or not caring about others' welfare.

To see how it doesn't work, just look at the 70's. It was the "me" generation, and what we got out of all that selfish thinking was a bunch of assholes. We got the 80's as a result. Hippies became yuppies, became guys like the one Michael Douglas played in "Wall Street", who drained the country of money and heart. It's a failing endeavor. Everyone loses.