Self-esteem is the opinion we have of ourselves. When our self-esteem is low we tend to see ourselves and our life in a more negative and critical light. People with low self-esteem usually have negative thoughts about themselves and may behave in a way please others, sometimes putting other people's needs before their own. They may also avoid doing things that would otherwise enrich their life due to beliefs about not being worthy or capable.
Psychological therapy can help to improve self-esteem by exploring its origins and challenging some of the beliefs we may hold about ourselves.