Acharya Prashant explains that the need for confidence arises only when there is fear. He points out that one does not require confidence to speak with family or friends because there is no fear in those settings; however, the demand for confidence arises in formal situations like interviews where fear is present. He suggests that confidence is actually an indicator of fear, and overconfidence indicates an even greater fear. He advises seeking spontaneity and naturalness instead of confidence, as being natural means accepting oneself as one is without any pretense.