I am also recovering from a frozen shoulder, but thankfully it was not nearly as bad as the author. This is also my second time having it. Both times have required months of PT, mostly stretching and some strength training.

As for the pain during PT, I found it helpful to talk to the physical therapist, which distracted my mind from lower-level pain. When the pain increased, I’d temporarily stop talking and free my mind of thoughts, trying to reach a near-meditative state. I’d let the pain come and go, like clouds in the sky. Some days that was easier than others. Perhaps it helped that I had already learned some meditative techniques years ago.