Acharya Prashant explains that the fear of what others think of us is directly linked to our self-interest and greed. We only care about the opinions of those from whom we expect some gain or benefit, whether it is physical attraction or any other form of utility. He clarifies the equation that self-interest equals fear. When we value someone for the sake of a selfish motive, we give them undue importance, which often leads to them exploiting or dominating us. The speaker points out that everyone has a breaking point where they eventually refuse to be suppressed, but he suggests reaching that point much sooner.