The Power of Now — Eckhart Tolle (1997)

The Power of Now liberates readers from suffering by teaching that presence in the current moment dissolves anxiety about the future and regret about the past, synthesizing Buddhist mindfulness with Western psychology. With 8 million copies sold and translations in 33 languages, its impact is undeniable, and Tolle’s practical exercises help users achieve a 50% reduction in stress-related symptoms, according to reader surveys.