This document discusses frustration, defining it as the blocking of behavior directed towards a goal. It notes that frustration results in an unpleasant emotional state when one experiences obstacles in satisfying basic needs or goals. The causes of frustration can be both external environmental factors like natural disasters or social restrictions, as well as internal factors like physical defects, conflicting motives, or unrealistic aspirations. Common reactions to frustration include increasing efforts, changing goals, direct or indirect aggression, apathy, and regression. Resolving frustration involves identifying and changing causes, modifying desires, seeking advice, and expressing feelings in a supportive environment.