Daniel Crosby's accessible and practical guide to behavioral investing distills the most important psychological research into ten rules designed to help investors consistently make better decisions. Crosby, who holds a doctorate in psychology and manages a behavioral asset management firm, argues that most investment underperformance is not caused by bad market analysis but by systematic emotional and cognitive errors that cause investors to act at the wrong times for the wrong reasons. The ten rules cover the full range of behavioral failure modes: the dangers of overconfidence and the illusion of control, the way media and recency bias distort risk perception, the corrosive effect of social comparison on investment discipline, the critical importance of process over outcome in evaluating decisions, and the behavioral architecture needed to make a sound strategy actually executable in real market conditions. Crosby's approach is constructive rather than merely diagnostic — he provides specific tools and frameworks for managing behavioral risk, including pre-commitment strategies, rules-based decision protocols, and accountability structures. The book is written with notable self-awareness: Crosby is careful to acknowledge that knowing about biases does not automatically immunize against them, and that structural solutions to behavioral problems are more reliable than sheer willpower. An excellent and practical companion to more theoretically oriented behavioral finance texts.