I was trying to come up with a way to respond to marinerd, and y'all've (ha! take THAT grammatical construction) managed to help me put it into words - basically it comes down to the fact that I don't feel as happy as I'd like to be, and I'm not doing what I'd like to be doing.

Exactly what it is I'd really like to be doing with my life is something I still haven't figured out yet, mind, but I know that this isn't it.

-There's someone in my head, but it's not me.-