For the past sixteen years Shai has served as a spiritual teacher, leading seminars, schools and courses worldwide (Israel, Germany, Austria, Switzerland and India). He has published nineteen books, among them prose and poetry, two award-winning, one bestseller, many non-fiction about philosophy, psychology and spirituality. The books have been published in Hebrew, German, English, Korean, Turkish and Chinese.Shai developed the "White Light Expansion" method, "Power Psychology" and several methods for Chakras' healing and opening. He has particularly focused on the field of Chakras, researching it and teaching it for already eight years. Nowadays Shai is the head of the "Chiro-Yoga" center in Berlin.