Greenwell, Bonnie L.: - Bonnie L. Greenwell, PhD, is a transpersonal psychotherapist, author, and non-dual spiritual teacher in Adyashanti's lineage. For more than thirty years, she's specialized in mentoring people going through transformative experiences related to spiritual awakening and kundalini. Foreword writer Adyashanti is an American-born spiritual teacher and author devoted to serving the awakening of all beings.