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Richard Dennis and the Psychology of Trading Discipline

From TradingHabits, the trading encyclopedia · 6 min read · March 1, 2026
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The Mental Game

Trading is often described as 90% psychology and 10% strategy. The Turtle experiment is a evidence to this. The rules were simple, but the mental and emotional challenges were immense. The Turtles had to learn to trust the system, even when it was losing money. They had to overcome the fear of missing out and the fear of losing.

Cultivating Discipline

Discipline is not something you are born with; it is a skill that can be developed. One way to cultivate discipline is to have a well-defined trading plan. This plan should outline your goals, your trading strategy, and your risk management rules. By having a plan, you can reduce the likelihood of making impulsive decisions.

The Power of Patience

Patience is another essential trait for a successful trader. The market does not always offer opportunities. There will be times when the best thing to do is to sit on the sidelines and wait for a high-probability setup. A patient trader does not force trades; they wait for the market to come to them.