Can you rent a room in your house to help pay for the mortgage? Can you downsize? If you can sell, sell. If not, can you rent out your house and find a cheaper apartment/house? Can you live with family/a friend to share expenses?
Can you find a new job? One that is not so stressful? You could consider being a live-in caretaker of older persons or children if you are so inclined. Then housing, job, and food are all taken care of (I did this for a little while). l
Good luck! It sounds like you know you have to make changes, but just need a little support doing so. You can do it!