As a UI designer, this is something I need to tattoo on my forearm. Sometimes I'll spend so long banging my head against a problem that my bike-racer colleague

As a UI designer, this is something I need to tattoo on my forearm. Sometimes I'll spend so long banging my head against a problem that my bike-racer colleague will take me aside and remind me of the principles of overtraining. Of course, I ignore him 80% of the time because I can't stand to step away from a problem before it's solved, but he's always right.