If you were only permitted to read one book in your life, make sure it is this one. I believe this is the most important book you will ever read. The the two biggest keys to a successful life are understanding yourself and understanding others i.e. relationships. I recommend buying the paperback book, because believe me, you will want to carry this book around with you for quick reference.This book explains in the most simple and concise manner the most important underpinning knowledge required for successful relationships with yourself and others. Have you ever wanted to know who you are? What makes you tick? So you can harness this knowledge and know what your unique purpose is in life. So, you can confidently choose the best career for you, the best romantic partner and be the best parent to your child. If so then this book is a must-read.100 years of personality theory and research is cogently and concisely packed into this book. From Sigmund Freud to David Keirsey. Giving you a rapid personality test. Concisely describing the way your brain is wired: providing your life's meaning and purpose. Giving you profound insight as to why you like some people and dislike others. Why you are attracted to certain people and repelled by others. Why you are good at some things and poor at others. What you are motivated by and demotivated by. What your purpose and meaning in life is. It will tell you your strengths and who will appreciate them and your weaknesses and who can compensate for them. It will help you to understand the personality type of your friends, colleagues, lover, partner and children, so you can improve the quality and the efficacy of all your relations.This book will enhance your life and I guarantee that you will take this book around with you as a reference, so you can apply the powerful knowledge on a daily basis.