tell people first off
you're on the internet man, no need to hide behind aliases. having depression won't lead to shit-talking, insults, or any of that crap on NS, i know because i've admitted to having chronic depression on here and received nothing but love from my fellow NSers.
once you realize that people are decently sensible towards it, you can try telling a few of your closest friends, or if that doesn't float your boat (i don't blame you, no friends of mine know), then try to talk privately to a counselor or something.
working out helped me, so did a really close friend. rarely you'll meet one person who understands and helps as much as my friend helped me, but if you do, don't take it for granted.
anyways, exercise always makes me feel better. so does good music, listen to some chill stuff, look at the good things in life, and keep your head up. find a hobby, talk to new people, hook up with some girl that's easy (may not be the best looking but it doesn't matter, it'll boost your confidence a little bit). put yourself in positions to succeed and to gain confidence.
one of the things that makes me feel the best is helping others