@ Nielk Thanks for posting this short video clip. With respect to the mind/body connection, I've decided to put my own experienced patient's interpretation on Doctor Unger's statement. For those who haven't viewed the video, here's a portion of what she said: "Our society does not do a good job of understanding there is a mind/body connection, and when you start understanding how people respond to their illness and how it affects them, it is a circle".
Here's my take. Before becoming ill with my precipitating viral infection, I perceived myself as an exceptionally fit and healthy person. It was beyond my capacity to imagine that I would not recover from a viral infection. I always had in the past. Therefore, my lasting fatigue and increasing symptoms must have been due to a period of time that was unusually demanding, even for me. Since I knew this time period would come to an end, there was no reason to slow down. The problem would resolve on its own. When it didn't, I followed a typical "when the going gets tough, the tough get going" strategy, and tried even harder. Of course, that only made things worse. So yes, according to Doctor Unger's mind/body model, how I responded to my illness (denial) did affect me (I became much worse). And, even after years (decades), I still rarely acknowledge how impaired I am. The slightest improvement, however brief, results in my doing more, which makes me worse, so I do less. Until the next time. Yes, it is a never-ending circle. So, Doctor Unger is correct, again -- but probably not in the way she thinks she is.