Evidence, dog! Write that down. Congratulations! I've found that going out and DOING things helps educate my brain and get that "un-learning" going, perhaps better than just about anything else. In the mornings now, I don't lie on my bed to read a bit before work. Instead, I sit in a chair. I can FEEL the effect on me, communicating to myself that the chair is just fine; I don't need to lie flat on a bed because my back can't handle a chair. It's good to keep tabs on those "wins." They go a long way to building a case that our pain is brain-centered, not structural. Such experiences call us more and more convincingly away from the familiar droning noise of our habitual assumptions.