I didn't see how they could improve the second edition of this book but this anniversary version is something special. Here's the biggest take away. There are 5 levels of actualization, where all your basic needs are met, then emotional needs, spiritual needs and then ultimately the end goal is "self actualization" Several nice features are the special quotes thrown in, ones like "The unexamined life is not worth living" things like that which stick with you and help you make better decisions. Its one thing to read these books and feel good about yourself and your mental state, its another thing to actually implement them into your life, in every day conversations, and situations. This book gives you the practical tools to help you do just that. In a word: Perfect.