The brain's primary function is not to ensure success or innovation but to prioritize safety and survival. Happiness, however, plays a critical role in enhancing survival, as humans function most effectively when they are happy. Negative emotions block focus, creativity, and social cooperation, diminishing one's ability to thrive. Happiness optimizes performance, fosters collaboration, and improves how others perceive and interact with you, ultimately amplifying your ability to succeed in work and life.