I would encourage the opposite, the more you try to stop thinking the more it the more it pops back up. The main thing i get from your post is your unease at going back to therapy after you said you were quitting.I don't think she's judging you but I think you're judging yourself for not being done yet. You guys talked about all the ways you had changed in your previous sessions- why would she go back on that?

I would suggest writing it all down on paper and writing out a "response" from her to help calm you down.