This document summarizes and compares Type A and Type B personalities. Type A personalities are characterized by aggression, time urgency, competitiveness and a chronic struggle to achieve more in less time. They have underlying issues with low self-esteem and try to overcompensate. Type B personalities are more relaxed, patient and easygoing, lacking any sense of urgency. They are often seen as apathetic. Key characteristics of Type A include hostility, impatience and preoccupation, while Type B traits include calmness, creativity and emotional stability.