I left a job where I made almost double what I do now, but I was so stressed out that I was a raging b*tch and I threw up before I went to work every day. It was a struggle to adapt to the huge pay cut (and it still is, I guess) but you learn to live on what you have, and the gigantic improvement in my quality of life was totally worth it.
I understand that mindset. DW worked at a credit card company call center but that was literally driving her batty after a few years. There were times when she just shuddered and had to force her way to go there. There came a day when she just burst out in tears because of the BS she was telling the people, because it was just wrong -- she quit that job. She found a job at Intuit which was call center related, but was fairly stress-free until such time as management changed. Ultimately, her first desire was to be her own boss while helping out with some of the household expenses. She had owned a video store years before she moved in with me, so that was her area of expertise. She wanted to try to sell DVDs online, so we started doing that part time 6 years ago. When this Intuit job stressed her out so much that she felt the same stresses, she and I discussed that she should just concentrate on what SHE wanted to do, and I would take over her bills she was paying with her income from that last job. It was tough financially for a while until things got better. She spends about 9 to 11 hours a day doing that. However, she has a much brighter mental outlook on life and is MUCH happier. That makes everything worth it.
She nets about 1/2 of what she brought in before, working outside the house, but that is enough for her to feel like she is contributing to the household. I am privileged that I bring in enough money so she can do what she loves to do without having to worry about the house payment not being made or having food on the table, etc. I am also privileged that I love doing what I do, too, so we do have the best of both worlds.