Sumit Paul-Choudhury, former editor-in-chief of New Scientist and author of 'The Bright Side,' discusses how optimism shapes our lives and enhances well-being. He explores whether optimism is innate or learned and highlights its benefits for health and success. Joining him is Dr. Sunita Saw, an award-winning Cornell professor and author of 'Defy,' who champions the power of saying 'no' in a world that pressures conformity. She redefines defiance as a means to uphold one's values and encourages listeners to embrace constructive dissent.