Self-esteem refers to one's overall opinion of oneself and how capable they feel. It begins developing in childhood based on influences like parents, teachers, experiences, and one's own thoughts. Maintaining healthy self-esteem provides benefits like being assertive, confident, and resilient in the face of challenges. Factors that can impact self-esteem include relationships, accomplishments, health issues, age, and media messages. Techniques for improving self-esteem involve surrounding oneself with supportive people, using positive self-talk, accepting imperfections, setting goals, focusing on successes, helping others, and regular exercise.