Leaving the security of our jobs is one of the most difficult things that we do. I assume that you've talked it over with hubby and he is OK with your decision. You probably feel like a failure, but in fact, you're probably pleasing your employer, because somebody's gotta do this stressfull and thank-less job.

More and more employers intentionally put their people in very difficult positions, without any reguard for their health (stress) or work-life balance. Another shop might be better, and is worth a shot. If not, then reevaluate your situation again. People with skills, like yourself, will always be able to find employment.

(Just an aside: people that have jobs like this should be required to smoke weed when working).