Sounds like you may of been in a narcissistic relationship and that has completely stripped you of your identity, confidence and self worth, possibly look at any documentation on how to recover from such a relationship, find a group of girlfriends to go out with ( anything in general) not necessarily bars and clubs just social outings to gain confidence in group situations and handling crowds, i would also suggest reiki, to help unblock negative energy and allow the positive energy to flow once again, hope this helps in some way shape or form