A hypothesis that Shiki's struggle for life probably influenced the creation of Morita therapy is presented. Although Morita had no personal acquaintance with Shiki, they did have three common friends in Terada, Wakao and Katori. Considering this, as well as the renown of Shiki's works, Morita likely knew much of Shiki and may have been deeply impressed by his approach to life. Several essential concepts of Morita therapy such as absolute bed-rest, anguish and deliverance, "Arugamama," "Jijitsu Yuishin," desire to live, and the importance of keeping a diary can be found in Shiki's lifestyle and in his literary theory.