If you're left with any scars...they just show that healing has taken place.
I feel by doing the work- we learn, we grow, and we can come through this experience much wiser and more compassionate than we were before.
I don't think we are damaged goods when it comes to future relationships. I think instead of overanalyzing, we simply see the red flags sooner if there are any. And, instead of ignoring, denying, and explaining them away- we can now trust our instincts, and make healthy decisions sooner. We learn to believe what our eyes see instead of what our ears hear. I also think that we no longer seek outside validation, what others think of us is not as important as how we feel about ourselves.
Keep working on you, try not to be discouraged...the future is as bright as you allow it to be. And, when you get frightened, ask yourself "what would I do if I wasn't scared?", and then do it.