[weichi]

Just ignore everything she said.

Sure, but it's not something that everyone can just switch on. if thte OP were that kind of person, he probably wouldn't have posted. So I think this advice is poor for this case.

You'll meet someone soon enough that will see positive where this last girl saw negative.

This, on the other hand, is 100% true. But very hard to believe when you are in the OP's mood.

[mbenjaminsmith]

What I'm trying to say there is it's ok to ignore what she said, not that he should magically forget about her in an instant.

I get the impression that he takes her criticisms seriously. She doesn't like certain things about him and he sees those as absolute faults. I doubt he is so flawed (at least compared to everyone else) and I don't think he should look at it that way.