It was part of a study of the efficacy of Mindfulness for the NHS. We were put in a functional MRI scanner and give screen based tasks. We then did a 6 week online mindfulness course after which we wen in the scanner again and did the same tasks, it was quite remarkable. Had I not been involved I would not have believed it. (my middle name is Thomas) I dont focus on pain but I am usually aware when spasms are about to erupt.
I tried the same techniques to alleviate my tinnitus and it is completely useless. (some you win and some you don’t)
I was going to include a link for Misha on Mindfulness body scan but they were way too waffly. If you are there Misha try Googling Mindfulness body scan - You MAY find something that helps.