Not cutting losses, along with hesitation and blind confidence, are the fundamental reasons for major losses or liquidation in contracts. Insisting on playing without the skills, lacking financial thinking in one’s cognition, and trading with a farmer's mindset is a reflection of being single-minded. Not cutting losses, preferring to hold onto trades, only researching why after being trapped. When there’s an opportunity to reduce positions or close trades, one often views small losses as extremely important, leading to missing the best opportunity to escape.