Look at it as something you just have to do. Calmly, without emotion. Actually, your meds will help you do that.

It sounds like you are somewhat non-confrontational. I am too. You have to remember that people will take advantage of that, but they can only do so if you let them. I was in a relationship like that. It took me forever to work up the will to get it out of my life, but I did it. I have confidence that you will too.