<Tr> <Th> Dewey Decimal </Th> <Td> 291.4 / 4 21 </Td> </Tr> <Tr> <Th> LC Class </Th> <Td> BL624 . T64 1999 </Td> </Tr> <P> The Power of Now: A Guide to Spiritual Enlightenment is a book by Eckhart Tolle . The book is intended to be a guide for day - to - day living and stresses the importance of living in the present moment and avoiding thoughts of the past or future . </P> <P> Published in the late 1990s, the book was recommended by Oprah Winfrey and has been translated into 33 languages . As of 2009, it was estimated that three million copies had been sold in North America . </P>

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