I don't know if it was the book, a placebo effect, or something else, but I got better after reading that.
Edit: I've been wanting to try this project for several years now: https://www.ctrl-labs.com. I think something like this is the solution moving forward vs voice coding.
Read this, it matches with Abraham’s teachings. Pain or allergies are your bodies way of telling you something emotionally isn’t right.
Well, I would recommend reading
The first one is a lot easier read and got me healing almost immediately, even when I was reading the book I noticed I was holding it with my right hand. The second book is incredible for gaining a DEEP understanding of why this occurred to you, what's going on and making tremendous insights. I remember reading this book and it felt like the ground beneath my feet was shifting with insight after insight and I have my book marked up with endless quotes and how they related to experiences I had I would write in the margins.
I understand the skepticism and people will think I'm full of shit and that's fine but this is what helped me saved my life, and I'm going on 6 months of vastly improved health and close to 100% now.
This isn't everything and I plan on doing a Youtube video explaining on my channel but here are the major things.
This isn't everything but hopefully it help gets you started. I hope the amount of time and effort I took to write this indicates my sincerity in wanting to help others like I helped myself, because it's transformed and given me a new lease on life and existence. And best of all getting through the chronic pain also is maintaining and managing your mental health, and figuring out what you truly want to do with your life and what barriers are preventing you from fulfilling it like say chronic pain.
Best of luck
The book The Mind-Body Prescription by Dr. Sarno covers this exact topic, and made a huge impact on my life and the life of a friend of mine. It's a worthwhile read for scientifically-minded skeptics who are feeling frustrated that doctors seem stumped by their chronic pain/illness. I had a worsening pain that jeopardized my ability to work a desk job, and that book resolved it in a matter of weeks.
The Mindbody Prescription  and The Divided Mind  are two of his books.
My interest in this started with the motivation to get some relief for the RSI-like symptoms and it's been part of my recovery for a few weeks together with the improved ergonomics.