Hi,
Please don't give up on yourself and trying to find a way of coming to terms with your experience. I know from experience that termination can be done really well if you are in a competent and safe pair of hands. I find it amazing how 'some' T's expect their clients to be honest, vulnerable and deal with transference yet when they hit issues and trouble they're the first to run with little to no regard for the person who has bared it all emotionally. Again, I say 'some' as there are some really wonderful T's out there too
It's really great that you were at some point feeling a lot more confident about yourself - it just shows that you do have it in you. That feeling of self-confidence you had ultimately came from within you. If you really stop and think about it you have to be thinking in a particular way in order to feel self-confident - no-one pulls strings and does it for you. Can you focus on putting him and this hurt behind you and finding someone really good who can help you to achieve that and also find that wonderful self-confidence that you deserve?
Also, from my experience, therapy can be painful and it can also be truly enlightening!