I'm trying to figure out if I am depressed or just going through normal life stuff. I've been having these attitude shifts lately and I can't tell. One day I'll be happy, the next I'll just feel kinda down. My mood just swings week after week.

This has been happening for a couple months now, I guess since school started up again, so I'm wondering if that might be the cause.

I don't really have a reason to be sad, which is what worries me. I have a great home and family, a decent amount of friends (although I wish I had more) and some good hobbies. 

But sometimes when I turn the lights off, stuff just kinda hits me, and it hurts. I have talked to one of my friends, and he's had the same thing going on, which is another reason I think it might just be stress. 

I'd really appreciate a bit of insight on this, as I'd like to get over this. I don't want to be depressed, but I guess I might not have that choice.