I can relate to so much of this right now, it's like I wrote it. Especially the first half of your last post.

The only advice I can give is to make sure depression's really not involved. I know what you mean about looking at things from a different standpoint, it's odd feeling like for once things honestly can't be explained away as depression and are just part of a legitimate realization that things actually suck. Still though, keep in mind depression could at the very least be exaggerating how bad those "realizations" are so they're all you can see right now, and making it impossible to see all the positives in yourself and your life. Artistic talent comes and goes for a lot of people, especially if depression's involved, so don't think you've lost it forever. I wouldn't doubt that you'll get back in the groove of things with practice, or, if the time's just not right now, in the future when it is.