Recently, my mom went through the same issues. She was at her job for 30 years. However, she had regular stomach aches, problems sleeping, alivated agression, and was unmotivated. 30 years is a long time to be in a job, she had security, benefits, and had worked from the bottom to a high position with no post secondary education, thus she felt extremely stuck. However, she made the great leap and applied for another job. the first time she applied she did not get it, however, after a bit of a bruised ego and some work gossip she knew she had to get out for her health. She applied to another job posting and got it! She is now doing a less stressful job and enjoying waking up and heading to work. She is confident and well supported at her new position. Yes it is hard to make such a great leap after so much time,however, you have to understand what is more important, a job or your health or that of a loved one. Life is all too short to waste feeling sick and miserable everyday. I am not saying this is the solution for you, but maybe switching departments, speaking with a boss, or simply asking for help can aid in your partner's work load. Good luck , it always gets hard before it gets easy.