I have a great deal of social anxiety, so I can relate to what you are saying. I am proud that you have decided not to be a doormat anymore. This may run off the people who were using you as one, but any new people you meet will meet this new you and you will eventually find people who accept you for who you are.

I really wish you good luck on this. I don't have any friends because of my anxieties and what I believe is my weirdness. I hope you are able to break the cycle.