Take heart that there is a light at the end of the tunnel. I know its hard, but I often think of Winston Churchill's quote "If you're going through hell, keep on going." Because once you get through hell and on the other side, everything will be better. Don't give up.

Find the thing(s) that make you feel fulfilled. For my best friend it was joining a pirate society and becoming a pirate. Right now, for me, its doing photography. Find that one thing you can look forward to and really enjoy.