An excellent book on the psychotherapy process if you struggle with dissociative difficulties is Richard A. Chefetz's book: Intensive Psychotherapy for Persistent Dissociative Processes. It was published in March 2015 and was winner of the International Society for the Study of Trauma & Dissociation's (ISSTD) Pierre Janet Writing Award. It was written mainly for clinicians but I found his writing clear, concise and respectful of clients. It's one of the best books I've read on Dissociation (Chefetz calls doesn't like the word "disorders" as he very clearly indicates that all human's dissociate to a degree and it is only when the process gets in the way of one's functioning in life that it becomes troublesome). He includes excellent examples of how he works, and he wasn't in the least afraid of giving his readers examples of his mistakes