13 Things Mentally Strong People Don't Do: Take Back Your Power, Embrace Change, Face Your Fears, and Train Your Brain for Happiness and Success

Morin argues that mentally strong people distinguish themselves by learning from their mistakes rather than repeating the same patterns indefinitely. The chapter centers on the case of Christy, a professional woman who repeatedly yelled at her teenagers despite knowing this approach was counterproductive. Through therapy, Christy discovered that her pattern persisted because she lacked alternative discipline strategies and failed to recognize her emotional triggers before losing control.

The author identifies several psychological reasons why people repeat mistakes. Historical educational practices once discouraged children from guessing answers for fear that they would memorize incorrect information, but recent research demonstrates that people can effectively learn from errors when given proper feedback. Cultural factors also contribute to the habit of repeating mistakes: Public figures model defensive rather than learning-oriented responses to failure when they deny any wrongdoing rather than admitting their mistakes.

Morin emphasizes that stubbornness, impulsivity, and fear of success can trap individuals in cycles of repeated mistakes. The sunk-cost fallacy leads people to continue investing in failing endeavors rather than cutting their losses, while impulsive responses prevent the reflection necessary for learning. Some individuals unconsciously sabotage their success because achieving goals creates anxiety about maintaining their achievements.

The author presents a systematic approach to breaking these patterns through three key strategies.