Trances People Live
This is the book that began a completely new direction for me as a therapist. I think it contains the basis for a revolution in therapy by getting us to recognise that trance states are just part of normal brain functioning; the means by which the brain creates our perception of reality - including our problems and limitations. 'A must read' is an overused phrase, but this really is.
Word Weaving: The science of Suggestion
Word Weaving II: The question is the answer