Escape Your Invisible Prison. If you're reading the back of this book you already know what it's about: the invisible prison of our own creation that we keep ourselves locked in. Based on the life of Susan Armstrong, this book answers the question of how she went from addicted, abused and homeless, to international speaker, award-winning trainer and author. Using a mix of examples, stories, and easy-to-read principles this book provides you with techniques and tips that will allow you to finally break free of your invisible prison. And stay free.