you slept too much
Depression? I do that when I'm depressed.. 16 hours gone and still exhausted.
Yeah that definitely sounds like it's it. Doing something that makes you feel good about yourself could be good, making yourself get out among friends (positive open friends)? I'm lucky in the way that I've got a rock to rip me out and make me admit the problem and deal with it.. Don't know what I'd do without that.
Talking is good, but being around a person who can make you laugh is better. I also try to get out into a natural setting, sit down with one of my pets or go to a metaphysical store. Doesn't help everyone but they're worth a try :)
It sounds like you've got it bad. I really hope that you can find some kind of happiness soon.
You slept too long.