This book me "re-energized" in spite of my practice that I personally follow the Soto Zen tradition, I loved this course, as well as reflections of Taïkan Jyoji on existence.Rien is realized in 30 minutes sitting on a zafu, the perseverence is the key of the way. Taikan Jyoji is the author of many other books that I procure to progressively after a replay of this one. Finally, I advise you "Art of Zen koan" the same author.