This modern spiritual classic, presented as a thirty-day meditation retreat taught by Joseph Goldstein, offers timeless practical instructions and real-world advice for practicing meditation--whether walking or sitting in formal practice or engaging in everyday life. Goldstein--a beloved and respected meditation teacher who studied for many years under the guidance of eminent Buddhist teachers from India, Tibet, and Burma--uses the retreat format to explain various basic Buddhist teachings including karma, selflessness, and the four noble truths, while also drawing connections to many different spiritual traditions. With a new preface reflecting on how the conversation around meditation has changed over the last forty years, this book is the perfect companion for both experienced practitioners and those looking to get into meditation for the first time.