Self-esteem is really important. It is the confidence that a person possess inside, but there are factors that can ruin a person's self-esteem. Sometimes when a person hears that they are stupid, ugly, not smart, all the time, that person may begin to believe it. Low self-esteem can make a person question their worth and not believe in themselves.
Some of the ways a person can build confidence is to start saying that 'I can', 'I am beautiful', 'I am smart' and most importantly loving oneself. It is very critical in a person's life to have high self-esteem because it helps one to become successful and experience love.