A psychologist is a professional who studies the mind and behavior. They use scientific methods to understand how people think, feel, and act. Psychologists often work in various settings, including hospitals, schools, and private practices, helping individuals cope with mental health issues, improve their relationships, and enhance their overall well-being. Psychologists may specialize in different areas, such as clinical psychology, which focuses on diagnosing and treating mental disorders, or developmental psychology, which studies how people grow and change throughout their lives. They often use techniques like talk therapy and psychological testing to assist their clients in achieving their goals.