If you wouldn't just 'have a crack' at fixing something important, say your car or your house, why keep on doing it with the most valuable thing you 'own' - your body?
Gary had been told by every surgeon that he spoke to that there was nothing they could do for him. He had been a strong person for a long time, even when the back pain started to become a problem – persisting with all the usual things he loved to do even when those who loved him could see the discomfort on his face and asked him if he was ok.
Stop putting up with pain, and start moving towards better health.