I think any therapist will tell you that it's best to have something to look forward to; probably small, near-term things as well as large, long-term goals. When you don't have anything to do, the future looks pretty grim. I've long given up on anything like finding some sort of meaning to all this, but I do try and find little enjoyable stuff to do.

I think exercise is pretty key and applying the philosophy above of doing the type of exercise you like and making it easy to do is very helpful.