Explanation:
Frustration refers to the unpleasant emotional state that arises when an individual's efforts to achieve a goal are blocked or hindered. It is a common human experience that occurs when individuals face obstacles or challenges that prevent them from accomplishing their desired objectives. Frustration can occur in various aspects of life, including personal relationships, work, academics, and other areas where individuals have goals and aspirations.

Causes of Frustration:
There are several causes of frustration, including:

1. Obstacles: When individuals encounter obstacles or barriers that prevent them from reaching their goals, it can lead to frustration. These obstacles can be external, such as financial constraints or lack of resources, or internal, such as personal limitations or self-doubt.

2. Unrealistic Expectations: Setting unrealistic or overly ambitious goals can set individuals up for frustration. When they are unable to achieve these goals within the desired timeframe or in the manner they envisioned, frustration can arise.

3. Lack of Control: Feeling a lack of control over a situation can lead to frustration. When individuals perceive that they have limited influence or power to change their circumstances or overcome challenges, it can contribute to feelings of frustration and helplessness.

4. Interference: Frustration can also stem from interference or disruptions in the pursuit of goals. This interference can come from external sources, such as other people's actions or environmental factors, or internal factors, such as conflicting thoughts or emotions.

5. Perceived Injustice: When individuals perceive that they have been treated unfairly or unjustly, it can lead to frustration. This can occur in situations where individuals believe they have been denied opportunities or resources that they deserve.

Effects of Frustration:
Frustration can have various effects on individuals, including:

1. Emotional Distress: Frustration often leads to feelings of anger, irritation, disappointment, or sadness. Individuals may experience a range of negative emotions as a result of their blocked goal-seeking.

2. Decreased Motivation: Frustration can decrease individuals' motivation to persist in their efforts to achieve their goals. It can lead to feelings of helplessness or resignation, causing individuals to give up or become less motivated to overcome obstacles.

3. Aggression: In some cases, frustration can manifest as aggression or hostility. Individuals may direct their anger or frustration towards others, leading to conflicts or confrontations.

4. Decreased Performance: Frustration can impair individuals' ability to perform tasks effectively. It can hinder concentration, problem-solving skills, and decision-making abilities, ultimately affecting performance outcomes.

5. Negative Self-Perception: Frustration can also impact individuals' self-perception and self-esteem. When individuals repeatedly face obstacles or fail to achieve their goals, it can lead to self-doubt, feelings of incompetence, or a negative self-image.

In conclusion, frustration is the unpleasant emotional state that arises when individuals face obstacles or challenges that impede their progress towards achieving their goals. It can have various causes and effects, impacting individuals' emotional well-being, motivation, performance, and self-perception.