Psychological stress can negatively impact one's mental well-being and daily life. The document discusses psychological distress, defining it as unpleasant feelings that interfere with functioning. It also distinguishes between stress, eustress (positive stress), and distress. Several theories on the psychological effects of stress are presented, along with common causes and symptoms of distress. Finally, the document outlines different coping strategies people can use to manage stress, such as relaxation techniques, exercise, and talking with friends. Effective coping mechanisms are important for dealing with life's stresses in a healthy way.