What do Oprah, Abraham Lincoln, Max Lucado, Meryl Streep, and Joanna Gaines have in common? They're all introverts! Gerth reveals the brain science behind this trait that half the population shares, what it really means, and why it's so important to our world. She explores ways to exude quiet confidence, form meaningful relationships, and exercise unexpected influence. 224 pages, softcover from Revell.