As an attorney this book has altered the way I argue my cases. It has given me insight into the negotiation process in a different way than any other book I have read on negotiation. The five core concerns have helped me when I talk with my client, other attorneys and even when I interact with the judge. I also use the five core concerns in my personal life. You can grasp them in only a few minutes, yet they have a complexity to them. When you read the chapter about the ex-President of Equador you can understand how these core concerns can work on any level - personal, professional, or political. It is a must in everyone's library.
You want a book that can help you with your family relationships over the holidays? This one will do it for you. I read it and it has already helped me with my teenage daughter. Combine this book with Getting to Yes by Roger Fisher, and you will get what you want in any relationship. It's been working for me.