We are facing a global crisis involving multiple problems, any one of which could drive humanity to ruin. This presents an urgent need and opportunity to create fundamental, long-term changes promising a sustainable future. Like it or not, this situation puts each of us living on Earth in a very special place in the history of humanity and our planet. This book describes the core concepts and principles of this art, as well as methods for making use of them. He also proposes plans for moving beyond the personal level to applying such ideas for social, cultural, and institutional change.