Thanks for your comment.
I try to listen away from equipment as well, oscillating between headphones, living room stereo, and especially car stereo. It never hurts to hear how the mix is translating outside a studio space.
I completely agree with taking a break from mixing and coming back to it with fresh ears. Like you said, judgement can get sketchy, and walking away for some time will help regain focus and objectivity.
I suppose if you're a professional with quick turnaround deadlines, you probably don't have the luxury of taking a break for weeks, or even a couple days. Even then, the ears need a break throughout the day. Maybe 10-15 minute breaks for every 1.5hrs; maybe a 30-60 minute break every 4 hrs; etc.
Respect the ears!