Pain Management

I am reading Elman's Hypnotherapy book and I am amazed with what I am reading. I would like to experience this type of anesthesia. Could someone recommend a good course or additional reading. Can one hypnotized themselves to induce anesthesia and if so how do I go about learning it? This all sounds unbelievable but I know it is true and now I am obsessed with learning how to do it.

Thanks,

David