I work the graveyard shift at the local grocery store and on my days off I stay with the schedule (sleep in the day). There's not a lot to do at night so sometimes I'll just get away from all the stresses of life and I'll go out and just drive.
I'll take a scenic highway or a country road, or just a drive past my old school. This helps me clear my head a little. Some nights I just find a good place to park, turn off the music, sit, listen, and relax. Sometimes I fall alseep and sometimes I just sit for hours. Meditation I guess you could call it. But anyway enough about that, I usually get my best ideas while I'm on the toilet pooping.
Modus
(On the toilet seriously, I can't write a serious song. When I try to write a serious song it turns out crappy, and I don't know why.)