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

Andrew Harvey is an internationally acclaimed poet, novelist, translator, mystical scholar, and spiritual teacher. He is the Founder Director of the  Institute of Sacred Activism. www.andrewharvey.net

Prageet Harris is an English, internationally known channel who has assisted people with spiritual growth for twenty-five years. With his guide, Alcazar, Prageet designed and built the Stargate, which assists groups and individuals in the process of understanding and knowing Self – the process of awakening. http://www.thestargateexperience.com/

Esther Hicks Weaver is an American inspirational speaker and author. She has co-written nine books with her husband Jerry Hicks, presented numerous workshops on the law of attraction with Abraham Hicks Publications. www.abraham-hicks.com

Patrick Holford is a pioneer in new approaches to health and nutrition. He is a leading spokesman on nutrition in the media, specialising in the field of mental health. He is the author of 37 books, including The Optimum Nutrition Bible.  https://www.patrickholford.com, https://www.holfordirect.com/