Jeff Foster (born July 30, 1980) is a spiritual teacher from London, England. He wrote a book, Life Without a Centre (Non-Duality Press), and was invited to hold small gatherings. Eventually, several more books were written, and the gatherings were supplemented with retreats and one-to-one sessions. http://www.lifewithoutacentre.com/

Elizabeth Gilbert is best known for her memoir EAT PRAY LOVE, which chronicled her journey alone around the world, looking for solace after a difficult divorce. The book was an international bestseller, translated into over thirty languages, with over 10 million copies sold worldwide. The book became so popular that Time Magazine named Elizabeth as one of the 100 most influential people in the world. www.elizabethgilbert.com

Alex Grey is an American visionary artist, author, and teacher. He is a member of the Integral Institute. He is also on the board of advisors for the Center for Cognitive Liberty and Ethics and is the Chair of Wisdom University's Sacred Art Department. Website - alexgrey.com

Stan (Stanislav) Grof is a Czech psychiatrist with more than fifty years of experience researching the healing and transformative potential of non-ordinary states of consciousness. His groundbreaking theories influenced the integration of Western science with his brilliant mapping of the transpersonal dimension. www.stanislavgrof.com

Mia den Haan is a spiritual channel, spiritual healer, business mentor, and transformational life coach. She has assisted children and parents with autism, helped to heal relationship issues, also issues of mental, emotional or spiritual nature. miadenhaan.com

Z'ev ben Shimon Halevi (Warren Kenton) is an author of books on the Toledano Tradition of Kabbalah, a teacher of the discipline, with a worldwide following, and a founder member of the Kabbalah Society. http://www.kabbalahsociety.org/

Graham Hancock is a British writer and reporter. He specializes in theories involving ancient civilizations, stone monuments or megaliths, altered states of consciousness, ancient myths and astronomical/astrological data from the past. www.grahamhancock.com