Dr Kweethai earned a doctorate at Kent State University in Adult Education. So, no, she is not a medical doctor; but it is customary to address persons who have earned that degree as Doctor (Dr), particularly in academic settings. Her promotional materials clearly identify her as Dr Kweethai Neill, PhD; as opposed to MD. Consistent with the ethics of hypnotherapy, for certain issues she refers a client to their physician to rule our organic causes before proceeding with hypnosis.
Experiencing change is not the same as entirely resolving the issue. And very often the issue is not what the client thought it was. iChange Therapy often begins with scaling, "On a scale of 1 to 10, where are you right now relative to...?" "You say you are at 3. Getting to 10 today sounds a little unrealistic. If we can get to 5 today, is that acceptable to you?" Virtually every client agrees, then exceeds that goal; getting maybe to 6 or 7. Or, a new issue is exposed, something the client was previously unaware of. That changes the client's perspective by providing a new path toward resolution.
In a word, No. Will it change the way you do hypnotherapy? That depends on you. Of course, if you are not interested in change, you will not buy the book. But if you do, you will see what Dr Kweethai went thru to create a personalized methodology that has benefitted clients and earned respectable fees for over 20 years. You likely have interests other than feng shui and energy medicine you would like to incorporate into your hypnotherapy practice. iChange Therapy is an example of how to take risks and evolve your own proprietary approach in the process.
Only if you want to share Dr Kweethai's success orientation. That orientation means reading many books on a given topic; often returning to an original source or author. In this case, Crucial Conversations: Tools for talking when stakes are high, by Patterson, et al. (2011). This book does not retread that ground; it is generalized to hypnotherapy, and most specifically to the pretalk. So your practice abilities will benefit from this book alone, but you will benefit even more if you expand your exploration.
One, the only shortcut to building wealth is to inherit it. The rest of us have to work very hard at it. Yes, it became apparent after the book came out that the dollar sign is a bit misleading. A planned revision (in progress) will include a new title. On the other hand, it would not be surprising if someone who bought it specifically for the dollar sign placed it (unread) on a shelf with similar virtuous titles (also unread) to impress clients.
This particular book addresses the client experience. It is a hypnosis primer for anyone intrigued by the notion of hypnotherapy, but with no experience or knowledge of hypnosis beyond stage shows. Most copies of this book have gone to people interested enough to call Dr Kweethai's office but not invested enough to commit to an appointment. Rather than answer the same questions over and over with no guarantee of conversion, she offers to sell them her book. The person who calls back after reading the book is ready to make that appointment; and has, in effect, already experienced the hypnosis pretalk.