Yeah, I don't particularly care for the cutesy phrase "fake it till you make it," because it implies that you're being "fake" or "false"--the reality is that you don't need to FEEL everything before you DO it. You don't have to pretend that you believe in it or that you feel great about it (that would be "faking")--if you DO it, though--however you feel about it--something happens that makes it satisfying.
My experience, anyway.