

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. Its core message is that people's emotional problems are rooted in their identification with their minds. 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". As of 2009, it was estimated that three million copies had been sold in North America. Published in the late 1990s, the book was recommended by Oprah Winfrey and has been translated into 33 languages.
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The concept of self reflection and presence in the moment are presented along with simple exercises for the achievement of its principles.

It presents itself as a discussion about how people interact with themselves and others. The Power of Now: A Guide to Spiritual Enlightenment is a book by Eckhart Tolle.
