Emotion is the biggest obstacle to profit. Impulsiveness, greed, fear and impetuosity act like tangled vines restraining wealth?building thinking. Greed drives chasing market peaks; fear triggers hasty liquidation; restlessness makes people abandon projects easily. Most financial losses stem from loss of emotional control. The wealthy master self?regulation: they stay calm and make rational judgments, separating feelings from decisions. Stable sentiment lays the foundation for wealth.