The University of Iowa did a study on pain sufferers and found that they could actually see parts of the brain experiencing pain shutting down. This was done by doing a type of medical hypnosis. It is based on an ancient form of breathing meditation from India called vipassana.
This is a type of technique that can be done in the comfort of your own home and it's a scientifically proven way to beat pain without using pain medications.
Al Sears, MD has a great article "Mind Over Matter" talking about this type breathing meditation. To read his article, just go to this link http://www.alsearsmd.com/conquer-pain-with-mind-over-matter/
The breathing technique that Al Sears talks about is based on vipassana, which is one of the world's most ancient techniques of meditation. Vipassana means to see things as they really are. It focuses on the deep interconnection between mind and body. Healing of human suffering and having a total eradication of mental impurities is a major part of vipassana.
There are a whole range of stress related physical illnesses that could be helped with vipassana meditation including; stomach ulcers, angina, migraines and many more. Even mental pain, such as anguish, remorse and grief can be cured.