The Power Of Now: A Guide to Spiritual Enlightenment is self-help book of guide to day to day living and stresses by Eckhart Tolle, published in 1997.
The book draws from a spread of “spiritual traditions”, and has been described by one reviewer as “Buddhism”. Mixed with mysticism and a couple of references to Jesus. Its core message is that people’s emotional problems rooted in their identification with their minds. The author writes that a private should remember of their “present moment” rather than losing themselves in worry and anxiety. You can download from below and buy from amazon if you want.