Labeling and mislabeling are forms of overgeneralization where we make harsh judgments about ourselves or others based on a single event or experience. This can involve using extreme language to describe someone or ourselves, such as calling oneself a "complete failure" after a mistake or labeling someone as "totally rude" for a minor offense. This kind of labeling can be damaging and unfair, as it reduces a person to a single negative trait or characteristic.