You sound just like me. Opiates are one hell of a powerful drug to be in the grip of, but we CAN rid ourselves of this addiction. Be careful with that money you are getting, maybe have someone close to you moniter it or put it in a savings account that you can't access at all times (except for a little bit of course). I always found that when I start to feel better physically, is when my mind plays the most tricks on me, making me want to go get high.
Suboxone might be a good idea for you. It is a very useful tool to help you stand on your own two feet for a little while. It is expensive though. Do you have a family member or a friend that would be willing to help you out with it? Someone who supports you?