Acharya Prashant explains that both excitement and regret stem from deep-seated conditioning. He notes that people often make decisions based on external pressure or the influence of others, only to feel guilty later when those same external sources criticize them. A person who possesses self-mastery is neither agitated by others' encouragement nor diminished by their disapproval. He uses the analogy of a ball to illustrate how most people are simply reacting to external forces, yet unlike a ball, humans suffer because they possess the inherent strength to be aware but choose to remain slaves to external influences like advertisements, films, or social circles.