Catastrophizing is a cognitive distortion where a person imagines the worst possible outcome of a situation, often leading to increased anxiety and stress. This thought pattern can cause individuals to blow events out of proportion, making them feel overwhelmed by fears that may not be realistic. People who engage in catastrophizing often struggle to see situations clearly, focusing on negative possibilities rather than considering more balanced perspectives. This behavior can affect mental health and decision-making, making it important to recognize and challenge these thoughts for better emotional well-being.