The Power of Now: A Guide to Spiritual Enlightenment is a monumental 1997 spiritual self-help book by German-born teacher Eckhart Tolle. It is widely considered one of the most influential spiritual books of the modern era, famously championed by Oprah Winfrey and translated into over 30 languages. The book serves as a practical guide to overcoming the prisons of our own minds by anchoring our consciousness entirely in the present moment.