Regarding the rage:
Is the rage a response to physical misalignment? You mention the itchy/crawly tension in your back and shoulders. Do you have a chiropractor that you trust who can make sure your back/spine is in proper alignment?
Other options might be Past-Life-Regression or Hypnosis to determine if your back and shoulders are carrying any unrecognized emotional pain.
Regarding the weight/diet issue:
Maybe a change in perspective is required. The "Law of Attraction" states that "what we focus on expands." Diets focus on weight, so weight expands when we want it to decrease. It may be better to focus on becoming "healthy and whole." (I learned this from James Arthur Ray,
http://jamesray.com/, on Oprah's episode of "The Secret.")
- Eric