You know that feeling when you cry for no reason, then you cry because you can't believe you're actually crying for no reason. That feeling when someone tells you your hair isn't sitting perfectly the way it was when you last looked at it in the mirror and you cry. That feeling of hopelessness.
Crying is a pretty big indicator, but sometimes you still don't realise that you're depressed until someone tells you. But then that makes you all the more depressed because you know that someone has been watching you closely for some time.
But then there's that feeling you get when your phone lights up with a phone call and the person on the other end of the phone tells you you got the job. The feeling of relief when you see your bank account after your first pay day. And the grin you can't wipe off your face when you buy those jeans you've been dreaming about for the past 12 months.
Depression hits everyone differently and everyone gets through it and deals with it differently. It could be that one phone call that could be the turning point or it could be a more lengthy process. But hang in there... Depression doesn't have to be forever.