What can a twelfth-century monk teach us about burnout, envy, or despair? Far more than we might imagine. In Self-Help from the Middle Ages, historian Peter Jones travels through Europe’s archives and libraries to uncover a lost psychology: a world where confession was therapy, sin was diagnosis, and the Seven Deadly Sins served as a map of the human mind.From the deserts of Egypt to the Vatican Library, from Dante’s Florence to Catherine of Siena’s cell, Jones introduces the...