Something else; it doesn't matter what came first, the chicken or the egg. Fact is, we have both! It doesn't matter where your depression came from. Fact is, you have it. Start from there and start to do something about it, like seeing a doc to give you something to control it. From there, you'll need to start working on yourself. You don't have to do it alone, if you will only ACCEPT what is being said to you.

Good luck.