I find that trying to really understand what pain is makes it go away, so rather than thinking oh i'm in pain ouch, ooh, woe is me etc, i do whatever heightens the pain and then I try to analyse what exactly the pain is, where it comes from, how molecules in my back can cause me a sensation of pain that actually when i come to think about it isn't located in any specific point, is it in my brain or my back and poof it disapears like magic.