Taking a break isn’t just critical for your body and your mind, but also your spirit. The research is pretty clear that when you’re up against a difficult problem, your brain needs some time away to assimilate. Extended mixing will fatigue your ears.
But it’s your spirit that bears the greatest risk. When you deal with a hard problem, it’s really easy to lose sight of the big picture. Don’t become so invested in the fight that peace becomes the enemy.