I agree, Quitting could be a positive thing, you have done that relationship, it could be time to do a different one, I'm sure there were positives from your old T, can you value these? You may be being a different you with your new T because of the good things you achieved with your old? You said that you feel good after seeing him, that sounds fantastic.

With these letters to your old T it sounds almost like you are trying to do therapy by letter, I can't see that anything can be achieved by that. My view is you either go and see her and have one or more sessions with her to thrash it out some more, or you stop. When I quit my T I sent her a long text saying why. My T's response was: I hope you will come in and talk about this - I guess she was saying she was not going to do therapy by text and I realised that I was not ready to quit as I did still want to talk to her about it all - I wanted her response to my thoughts.