ONe thing i have to do every night brfore i go to bed:
write in my journal, not my DJ, my personal one...i get out all my little niggles and gripes on paper.
sort it out in my head, and then i can sleep!!
If i don't write, i lie there thinking about it...it's almost like, as i'm writing about it, i'm thinking about it on a subconcious level and sorting it all out.