Don't let it get to you mate. Everyone has problems, people just deal with them in different ways. If you are to be temporarily disabled just try to make the most of what you can do. Maybe use your stress/depression in your artwork, it's worked for me.
On the disability issue, my best friend has MS & she's in a wheelchair, has been for many years. She's the happiest person I know, I feel quilty sometimes when I'm down as I know things could be worse.
Chin up.