This book follows the life story, the spiritual blueprint and the model of interior transcendence called The Interior Castle, which was written by Teresa of Avila in the sixteenth century. My purpose in writing this book is to bring these spiritual gems into our lives today. Teresa's book has by no means outlived its life and it has many lessons for us today. I have seen few models of spiritual transformation available in our modern times, that equal the authenticity and intensity of Teresa's work. Teresa was a mystic, a Catholic and a leader in a Carmelite convent in the tumultuous times of sixteenth century Spain. When I first started to study her, I knew that this was something that I needed to share with the world. I pray that it will change your life, as it has mine.