This book introduces readers to behavioral finance applied to wealth management. It explains essential behavioral biases and their damaging consequences including financial bubbles, and Prospect Theory. Additionally, it establishes fundamental rules for improving the structuring and protection of wealth. Despite its practical and didactic aspects, the book is accessible without sacrificing the depth of the subject. Aimed at students, asset managers, financial advisors, and investors, the book explores the behavioral approach on financial decisions and examines the psychology around investor behavior.