Tranquility has the transforming power to bring love, engagement and marriage into our lives. The Tranquility Principle in Dating and Engagement is inspired by the teaching of Torah Sages. It is a clear step by step guide to teach couples to acquire and cultivate the inner power of Tranquility, known in Hebrew as Menuchas Hanefesh, into their relationship. Shaya Ostrov, L.C.S.W., an experienced marital and relationship therapist, has taught the transforming power of Tranquility- Menuchas Hanefesh- to thousands of couples.