With my ex-T I talked about my thoughts of quitting for a while. When I actually did it I didn't tell her beforehand. I sent her a note saying I was not coming anymore. I followed this up later with a letter. I considered writing in the letter about things I was unhappy about, but decided against that in the end and just wrote a few positive thoughts I had about my therapy. It wasn't a letter of thanks though because at that stage I was kind of at rock bottom, feeling that the therapy I had had with her had really harmed me. She wrote back, and that exchange of letters helped me I think. She left the door open for me. I guess she'll never understand the effect that my therapy with her had on me. My example of termination is not one to follow, if you do terminate I hope you can figure out a better way than I did. I think it is probably better to talk about it in person.