In the middle of winter, Jane Dobisz arrives at a lonely, primitive cabin armed with nothing but modest food supplies and an intensely regimented daily schedule that she thumbtacks to the wall. “3:15 A.M. Wake Up. 3:20 300 Bows. 4:00 Ma. 4:15 Sitting. 4:45 Walking.” And so it goes, for 100 days. Dobisz, inspired by her Korean Zen master’s discipline of long, solitary retreats, has decided to embark on a retreat of her own. The unfolding story of her experience is related here. The suburban-raised Dobisz weaves amusing anecdotes about learning to live a Walden-like existence — water comes from a well, wood needs to be chopped — with Zen teachings and striking insights into the miracles and foibles of the human mind when there’s nothing on hand to distract it. Entertaining and inspiring, the book is a joyous testament to the benefits that solitude and reflection can bring to all.