I would never be naive enough to think one "Way" or one author has all of the answers we seek in life as humans. One needs to explore the mystery to find the truth on their own terms. Be skeptical as all hell. Don't believe anyone unless it feels genuine. For instance, Wayne Dyer seems phony to me, but beloved my millions. I don't like to critique his teachings because I'm sure he's helped many people. I personally like Buddhist and Toltec teachings. Thick Nhat Hahn isn't flying around in personal jets. I don't know much about Gangjani, and have read a little about her extravagant lifestyle. But I found the Diamond in Your Pocket keenly articulate. Maybe you can critique the author, but the message resonates magically.
This book gets one star for the long hours that the misguided devotee spent writing it and then attaching Gangaji's name to it. The content is a rehash of every other book that she purported to write. Much of the text is plagiarized from Vedic philosophy and twists the teachings of Ramana Maharshi to support a watered down version of that which is most Sacred. This is very appealing to western culture. Stop the search, don't follow thoughts, and you will find instant enlightenment. None of the great sages over the centuries from which she claims to quote have endorsed a quick and easy path to self-realization. This book falls woefully short of providing any substantive guidance to Self.
Even the title, "Diamond in Your Pocket", misses the mark in trying to describe the most imperative issues around your soul being incarnate and reduces it to something valuable in your pocket. It smacks of materialism. Is she trying to talk about actually being self aware?!! The rest of the book contains short platitudes that suggests that there is no effort required to reach self-realization and no need to devote one's life to understanding the most crucial questions.
Bless all those who still can't see through the hypnotic trance that is needed to accept this kind of drivel. And may they begin to see that they are supporting the extravagant lifestyle of snake oil saleswoman.
For those truly searching, I suggest any books by Pema Chodren or Thich Nhat Hanh. I would also suggest actually reading Bhagavad-Gita or the Diamond Sutra instead of taking the words of this so called teacher at face value.