I like that suggestion about humans wanting a "linear path to recovery" and that we all have different paths.
Like any new (possibly life-changing!!) discovery, I think it might be normal to spend significant amounts of time reading about TMS. I remember devouring Sarno's books, thinking, "Could this really be me--this sure sounds like me? Could this be my solution?" After suffering from serious back pain that affected every part of my life, it was so exciting to find a possible solution.
It's kind of like a new hobby, or book that you can't put down, or new exciting relationship, etc...
When you look back at your phone and realize that last conversation went on for 2+ hours! Or, justifying listening to one more chapter on an audiobook, knowing that you have to get to sleep...
I think at some point there has to be a shift to the work. For me, initially, that was journaling, feeling the feelings, digging back into my childhood, etc...returning to normal levels of physical activity. I had a physical therapist who turned me onto Sarno's books, so he was regularly asking what I was up to in relation to TMS work. I had a natural 'coach.'
For me, the "tmsing" discussed above could come when I anticipate outcomes and obsess over results. For example, I did these 5 things and put this much time in this week. I want/expect these results next week. And, then hyper-focusing on those results (did my back act up when I went for that long walk?)
Instead of letting things unfold and allowing things to naturally improve.