The Confidence Code by Katty Kay and Claire Shipman explores the science and art of self-assurance, arguing that confidence is a crucial component of success that women are often less equipped to access than men. The book combines research from neuroscience, genetics, and psychology with personal stories and interviews to explain how confidence is developed, why a “confidence gap” exists between genders, and how women can overcome it to achieve their goals through practical strategies like embracing risk and learning from failure.