I find that this Problem Solving Heuristic works when nothing else does.
Situate yourself such that you can easily move about in a circle. Stand, sit on a chair with wheels, grab your kidling's spin toy, whatever.
Now rotate yourself clockwise. If moving clockwise feels wrong, move counter clockwise. If that feels wrong as well, switch back and forth. Move at whatever speed you like - fast is fun, slow is swell, and happy mediums are, well, happy! Different speed have different effects. Experiment and discover what works best for you.
Once you've started, continue spinning until you fall down or are otherwise forced to stop.
At this point something will pop into your head. Meditate on this something however seems appropriate, whether that be dancing, dunking baskets, singing, screaming, painting, producing, assuming the lotus position, assuming the daydreaming position...use your personal route to reverie. Continue meditating until you are done.
This game has never failed to bring me results. Let me know how it works for you!
*** Want a fun job on a great team? I need a tester! Interested? Let's talk: Michael dot J dot Hunter at microsoft dot com. Great testing and coding skills required.