(((((((((((((((((((Rapunzel)))))))))))))))))))
Everybody else has made such good posts that there really isn't more I can say, except that YOU are an incredibly special person, and even if your T isn't telling you you're doing well or are capeable, I AM!!!!!
From what I've been reading, you seem to have some self-acceptance stuff going on that maybe your T isn't aware of. I feel exactly the same way you do a lot of the time--nothing I do is ever good enough, I can't possibly be doing as well as some people say, and I HATE it and freak out sometimes when I feel as though I should be validated in what I'm doing and people only come back with criticism. I agree that perhaps you should share more of your self-exploration with your T--and if it would help, you might want to print out and show her the conversation you're having here on PC! This looks like progress to me, at least.
TONS of luck&love,
~muse