Start doing guided meditation. There are plenty of options out there, but learning to quiet your mind can help with a ton of things, including pain.
For example, I have the redhead gene that makes me super resistant to anesthesia, both local and general. My urologist didn't believe me when I said I could feel everything, so I had my vasectomy without anesthesia. Because I can clear my mind so well, I made it through the procedure with just saying ouch under my breath a few times.
One way I do it is I imagine the pain as a red aura. I breath in through my nose, imagining the air as green, and it pushing the red up and out of my mouth when I exhale.
Apparently infrared saunas can help a lot with chronic pain too, since IR waves can penetrate pretty deep. They can be pricey for the decent ones, though.
It sounds like you could benefit from meditation.
But don't believe me, do your own research into meditation and pain management.