Self-esteem is how confident, valuable we see ourselves or if we feel worthy of respect. All of us at some point in our lives will feel lack of confidence and self-esteem exists on a continuum from high to low.
However, when we started saying negative things and being critical about ourselves, focusing mostly on our negatives and ignoring achievements, that could lead to feelings of unhappiness or disappointments with oneself.
Counselling can help you explore the way you feel and change your view of yourself and others.