Acharya Prashant explains that change is not an individual's responsibility because a person is an extension of their core nature, which is the soul or truth. He asserts that hesitation, shame, and guilt are not part of one's natural state but are artificial inventions of the mind designed to protect the ego and a false self-image. When a person hesitates to interact with a stranger, it is due to the fear that their reputation or self-image might be damaged by something unexpected. This fear stems from a desire for social approval and the maintenance of a specific identity, which the speaker likens to a scientist fearing an experiment that might disprove their theory.