Everyone cares about what people think but not everyone lets it affect them. What you are doing is revaluation of yourself either by comparing with your past self or other. What need to be done here is you have to change the evaluation or scale you carry continuously to measure your self.

Hello, I understand that you are having low self esteem and low self confidence at present..you could visit a counselor or a psychologist to share more details so that they can find the cause of low self esteem and low self confidence..once the cause is found you will be able to overcome your issues and feel better.. Take care Dr Sarah