How much you like, respect and accept yourself. Your concept of how worthy, valuable, lovable and capable you are in society.
An inflated opinion of yourself and often accompanied by a belief (or desire to be) that you are superior to others
Self-esteem is an internal job. It is you telling you how good you are; whilst always maintaining a firm grip on reality. Ego is you telling everyone else how good you are and is often driven by fear of rejection.