Now you go on as normal trying to make progress
I'm glad your new T is calling it as they see it - you've seemed to have trouble seeing things consistently one way for a while. (Did that just come out really bluntly? I can't tell and it's the only way I can explain it - I'm really trying not to be blunt or harsh or insensitive!). If your new T is straightforward with you it might get easier to accept, and to maybe start seeing what he sees.
Regardless of your diagnosis, you're still you. Always remember that, and that you are worth the work and effort (and that you are worth putting up with all the down times so that you can get to the better times!)