The Power of Now by Eckhart Tolle is a spiritual self-help book that guides readers to achieve inner peace by focusing on living fully in the present moment. Tolle argues that most human suffering stems from dwelling on the past or worrying about the future, and that this can be overcome by detaching from the ego and experiencing the “now” to find happiness, true self-awareness, and spiritual enlightenment. The book provides practical advice and exercises for mindfulness and presence to help individuals quiet their minds and live a more fulfilling life.