Little did Irina Tweedie know that her trip to India in 1959, at the age of fifty-two, would mysteriously lead her to a Sufi Master and set her upon a journey to the "heart of hearts," the Sufi path of realisation. Her teacher's first request of her was to keep a complete diary of her spiritual training - everything, all the difficult parts, even all the doubts. He predicted that one day it would become a book and would benefit people around the world. This diary spans five years, making up an amazing record of spiritual transformation: the agonies, the resistance, the long and frightening bouts with the purifying forces of Kundalini, the perseverance, the movements towards surrender, the longing and, finally, the all-consuming love. From a psychological viewpoint, the diary maps the process of ego dissolution, gradually unveiling the openness and love that reside beneath the surface of the personality. Mrs. Tweedie is the first Western woman to be trained in this ancient yogic lineage. Her story and experience testify that this teaching system can still be powerfully transformative today in our modern world.