One of the best things for chronic pain is a low glycemic, low(er) carb diet. Not all out Atkins, but much less or no grain, get your carbs from low glycemic sources like vegetables, sweet potatoes etc, eat plenty of protein and healthy fat (coconut oil, avacadoes, palm oil, fish oil, grass fed animal fat etc). I had chronic back pain that was becoming pretty severe. Since I use my back for everything (I do natural hoof care, plus lifting feed around here, cleaning out stalls etc) it was becoming a huge problem and limiting my ability to work. I also had wrist pain particularly in my right wrist (went through a few months where I had a lot of numbness in my hand as well, every morning my arms were numb and in the day my hands would be numb some of the time). Took about a month and a half to two months but after years of back pain my back is about 99% (gets a little stiff after I work hard- perhaps that is normal anyway). Was a little while back I was sitting in the theater watching a movie and I realized something was different in my back, I realized it didn't hurt! I've also lost about 9 lbs and I come from a family of people who could live off of air.
Get yourself a blood sugar monitor from Walmart, take it every morning when you get up before you eat anything. Ideally, it should be below 90, but at least below 100. Above 120 is diabetic range. Also, test your sugar about 30 mins to 1 hr after you eat it should never go above 140, above 140 you are actively damaging your body, particularly your eyes. Test again at 2 hours, it should be below 120. When your blood sugar is off, nothing in your body can work right and it's not just about diabetics. Most people in this country are insulin resistant. With a blood sugar monitor, you can find what foods and meals you do well on and which ones are silently killing you. Because I work physically so much, I didn't believe I coudl have blood sugar problems (exersize increases insulin sensitivity). I didn't believe it until I saw the numbers on the monitor.
If a person was only going to have one tool for monitoring their health I wouldn't pick scales or even a measuring tape, but a blood sugar monitor.
Healthy blood glucose levels were a big common factor they found in people who lived to be 100.
Good article on blood sugar:
http://chriskresser.com/when-your-“normal”-blood-sugar-isn’t-normal-part-2