Eckhart Tolle’s “The Power of Now: A Guide to Spiritual Enlightenment” is a spiritual self-help book. The importance of living in the present moment and letting go of the past and future is emphasized throughout the book. According to Tolle, the mind’s focus on time and ego can cause unnecessary suffering and keep us from experiencing true inner peace and joy. Tolle guides readers toward a state of presence and awareness that can lead to spiritual enlightenment through practical exercises and insights. “The Power of Now” is a widely popular and influential book that has inspired many people to live a more mindful and fulfilling life.