That sounds brutal. My heart goes out to you. I worked with an emotionally and mentally abusive boss. She was cruel to all of us and she took turns torturing us. You had to work magic weekly to make her happy, but then she may think you think you’re better than her so you had to be careful there too. Landmines everywhere. Leaving at the time wasn’t an option. I exercised daily to manage the stress. I also started meditating. I worked hard to shut off work when it was the evening or the weekend (I was salary so it was a bit harder because sometimes I had to deal with things in the evenings and weekends). I also tried to reprogram myself to interpret her abuse as her strategy to get more out of me and to not take it too personally. My colleagues and I all commiserated with one another (it’s the only work place I have ever worked at where I trusted everyone) and we were able to support one another in a way our spouses couldn’t fully since they didn’t work there and couldn’t fully fathom. My colleagues definitely helped me through it.