Good for you now you just need to get the help you need to overcome this:
I've tried to date but I cannot be the self I once new. He took that away from me. I haven't been myself for a long time. I honestly used to be so strong and happy bouncy person now I'm a mess. I don't know how to get my strength , confidence or love for myself back.
. Living like this is something you don't have to do if you get some help with overcoming it. You haven't been able to do it on your own so now get the help you need to get the old happy self back.
Good luck.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion