I am depressed and i'm in Therapy because of it. Started slowly and i didn't even realize that it's a mental Condition and took it for granted as part of my personality. Luckily, i had a Doctor intervening, sending me to an psychologist and now i'm getting my Stuff sorted out. Slowly, but steady.
I just wanted to say that it's not the best Descision to sit around and wait for it to leave. It will come back - and maybe its worse the next time it kicks in.