Upset, or distress, refers to a state of emotional turmoil that can arise from various situations, such as loss, disappointment, or conflict. It often manifests as feelings of sadness, anxiety, or frustration, impacting an individual's overall well-being. People may experience physical symptoms like a racing heart or difficulty concentrating when they are upset. This emotional response can be triggered by events like relationship problems, work stress, or personal failures. While it is a normal part of life, prolonged distress can lead to more serious mental health issues, making it important to address and manage these feelings effectively.