Every single ailment that I've had that is not an injury disappeared when I got into shape (and read Sarnos book).
You know the picture. Spent tons of time playing video game and works in an office since forever. I can't afford physical therapy, but working out + good posture makes the pain goes away "magically".
I say "magically" because I am not doing anything to target it, just go to the gym and literally do whatever for 30-40 minutes every other day.
Sarno's argument is essentially that emotional distress (mainly, rage) manifests itself in the body through TMS (tension myositis syndrome), and that depending on the person this expresses itself as a number of different ailments (sciatica, back and neck pain, migraines) with the same underlying cause (stress that results in decreased blood flow and oxygen deprivation which cause pain in the related area).