too much guitar hero

How much is too much? 
If, instead of random sparks of color flashing in front of your eyes when you close them, you see the scrolling circles of guitar hero behind your eyelids, you've played too much guitar hero.
If your dreams involve a strange blending of playing guitar hero and living the life of a rock superstar because of your intense level of play, you've played too much guitar hero.
If your fiance comes over to you while you're playing, and you actually think that she's admiring your fretwork, you've played too much guitar hero.
It's time for a break.