Acharya Prashant explains that the ego is the only entity that experiences hurt and pain. He asserts that an individual's entire inner world is often filled with wounds and suffering, even if they try to hide these injuries under sophisticated labels like professional success or social status. He compares human existence to a state of constant illness, where even basic necessities like food act as medicine required for survival. This state of being 'swollen' with ego, knowledge, and prestige is described as an unnatural condition that people mistakenly perceive as growth or beauty.