I'm sorry you were rejected. Is it okay to ask why you think they rejected you? Maybe you can find a new group of people that share your interests. I know that will be hard. If people don't treat you right or if they reject you, maybe you don't need them in your life anyways. I haven't experienced being ostracized by a whole group of people but just imagining if I did I would probably be obsessing about it too. I would just try to tell myself positive things like "I feel hurt by the rejection but its okay, I'm still worthy of love and acceptance from people and I'll make new relationships and keep positive people in my life." I have had a therapist though that I really grew comfortable with and depended on. She stopped seeing me abruptly and moved to a different facility. I felt rejected and abandoned for a while. Eventually I began to think of it rationally and understood It may have been draining working with me so closely and for that reason she had to move on. The whole "positive self talk" and rationalizing coping skills may not work if you've tried all these other things but it's always good to at least give it a try. I hope you can find ways of dealing with the anxiety that works for you. Hope you feel better.