This has been one of the most powerful books I've read when it comes to personal development and constructing a powerful mindset. I believe every single person needs to read this book and study NLP to better understand themselves and others. The quality of our lives is determined by the quality of our emotions and the strategies in this book allow you to better control your emotions and therefore, the quality of your life. Many people, including my past self, suffer because we weren't taught how our thoughts and emotions work and how to control them. As a result, you have many people who struggle with anger, stress, depression, jealousy, and many more negative emotional states. It's a fairly long book but I didn't find myself becoming bored at any point; I was always learning new and useful concepts to implement into my own life. I highly recommend that everyone read this book.