I used Sarno's book to cure myself back in 2002 and this approach has been successful ever since. Occasionally I will have some issue (though rarely wrist pain), and I can make it go away quickly by addressing the psychological root cause.
I highly recommend reading his book "The Mindbody Prescription"
Me too. It was a big cognitive leap to accept that the pain could be psychological, but once I'd made it and accepted it it worked. Still get pain from time to time, don't worry about it and instead try and work out what's bugging me that I'm not engaging with, and this nearly always gets rid of whatever it is.
I highly recommend reading his book "The Mindbody Prescription"