Why Intelligent People Still Make Costly Mistakes

Why do highly intelligent people repeatedly make decisions they later regret? Why do brilliant minds ignore obvious red flags, overthink simple choices, stay in unhealthy situations, or convince themselves that poor decisions are the right ones? "Why Intelligent People Still Make Costly Mistakes" explores the hidden psychological forces that quietly shape everyday decisions. Combining cognitive psychology, behavioral science, and practical wisdom, Simon Ellsworth reveals why intelligence alone is not enough to protect us from flawed judgment. From cognitive biases and emotional blind spots to analysis paralysis, confirmation bias, sunk cost thinking, and fear of uncertainty, this book explains the mental traps that influence our choices in relationships, careers, business, finances, and everyday life. Inside, you'll learn how to recognize the warning signs before they become costly mistakes, overcome overthinking, identify manipulation, challenge faulty assumptions, think more clearly under pressure, and develop a practical framework for making wiser, more confident decisions. Whether you're a leader, entrepreneur, professional, student, or lifelong learner, this book will transform the way you think, helping you replace regret with clarity, confidence, and better choices that shape a more successful future.