Hakuin was the famous restorer of the Rinzai sect of Zen Buddhism in the Edo era of Japan. It can be said that he was not only an excellent Zen Master but also the originator of psychotherapy for neurosis in Japan. He was born as the son of the stationmaster at Ukizimahara Station of the old Tokaido, on December 25, 1685. He was unusually clever and sensitive in boyhood, but he felt seriously that all is vanity in life and became a disciple of Zen when he was fifteen years old. He experienced the first step of enlightenment under the direction of Zen Master Shohju at the age of twenty-four in Nagano-Iiyama, but subsequently suffered from tuberculosis and compulsive neurosis. He received training from many masters, but without experiencing further satori. At Last, as he was reading the Hokekyo (Lotus Sutra) and listening to the chirping of grasshoppers, he suddenly attained deep enlightenment at age forty-two. He wrote many books, amounting to eight volumes in the complete works. Among the books on psychotherapy for neurosis are Yasenkanna and Orategama. He died at age eighty-three, on December 11, 1768 at Shoinji Temple in Hara. I-3ere, the authors introduce Yasenkanna ("A Quiet Talk in a Night Boat"), one of the earliest texts of self awakening psychotherapy.