In psychology, frustration is a common emotional response to opposition. Related to anger and disappointment, it arises from the perceived resistance to the fulfillment of individual  will. The greater the obstruction, and the greater the will, the more the frustration is likely to be. Causes of frustration may be internal or external. In people, internal frustration may arise from challenges in fulfilling personal goals and desires, instinctual drives and needs, or dealing with perceived , such as a lack of confidence or fear of social situations. Conflict can also be an internal source of frustration; when one has competing goals that interfere with one another, it can create cognitive dissonance. External causes of frustration involve conditions outside an individual, such as a blocked road or a difficult task. While coping with frustration, some individuals may engage in passive–aggressive behavior, making it difficult to identify the original cause(s) of their frustration, as the responses are indirect. A more direct, and common response, is a propensity towards aggression.

Trouble is a board game in which players compete to be the first to send four pieces all the way around a board. Pieces are moved according to the roll of a die. Trouble was developed by the Kohner Brothers and initially manufactured by Irwin Toy Ltd., later by Milton Bradley (now part of Hasbro). The game was launched in the United States in 1965. It is very similar to the much older game, Mensch ärgere dich nicht as well as another Hasbro game, Sorry! (originally marketed by Parker Brothers). The classic version is now marketed by Winning Moves.