The Power of Now: A Guide to Spiritual Enlightenment is a book by Eckhart Tolle. It is a discussion about how people interact with themselves and others. The concept of self-reflection and presence in the moment are presented along with simple exercises for the achievement of its principles.

The book draws from a variety of spiritual traditions, and one reviewer described it as "Buddhism mixed with mysticism and a few references to Jesus Christ, a sort of New Age re-working of Zen." It uses these traditions to describe a "belief system based on living in the present moment". Its core message is that people's emotional problems are rooted in their identification with their minds.[8] The author writes that an individual should be aware of their present moment instead of losing themselves in worry and anxiety about the past or future.

In the international bestseller The Power of Now, spiritual teacher Eckhart Tolle offers a powerful message of personal transformation and awakening. Blending teachings from spiritual traditions with practical guidance, Tolle shows how living fully in the “now” is the key to inner peace, emotional balance, and a more fulfilling life.