What is behavior? We think, feel, we act. Some of us feel, think then act depending if you think or feel before speaking.
When someone punishes or disciplines behavior they discipline thoughts and feelings
Would you discipline or punish a child who feels hurt or afraid? Anger is a cover emotion for fear and hurt. A 2-year-old toddler who just hit his friend is a toddler who feels hurt or scared. The child does not know why he or she receives discipline.
Children at this age are too young to understand what the word behavior is and believe If their feelings do not matter, they do not matter or if their feelings are bad they are bad.
and with that is how a low self-esteem, undeserving, unworthy, uncertainty, no belonging, becomes one of our first beliefs.