I read similar about this. Also for people like us who have been in pain for a long period your brain is extra sensitive to pain I think. It is something how the brain precieves it. I know at the clinic they used the biofeedback to help with the mental part. I don't know if its retraining my pain but for my anxiety I have started again to do deep breathing and relaxation tapes. At the clinic they use to say the more you talk about the pain the more you feel it.