I am also a very sensitive person and I worry a lot about people being mad at me and being abandoned by people that mean so much to me. What has helped me is to just have faith that people wont just abandon you and that not everyone that is mad, is mad at you. It doesn't always work and its not easy to change your thinking.

I think this would be a great topic to bring up in your therapy and maybe your T can help you with this. I wish you the best!