Dustin,
Hat's off to you taking care of yourself and finding out who you are. Sounds like you've done your penance so don't feel guilty about doing something for you. It's ok not have answers. Lose the worrying...it doesn't do any good to think about what happened yesterday or what will happen tomorrow. "Worry is like rust. It erodes happiness." A book I'm reading that is very helpful is The Power of Now. It' helps keep your mind in the present and accept things for how they are. Don't forget to do something FUN in life also to balance all the work and study.
Best Wishes