Acharya Prashant explains that an individual has the ultimate choice in what they internalize from their environment. Using the biological process of breathing as an analogy, he notes that while we inhale air containing eighty percent nitrogen, the body naturally knows to retain only the oxygen it needs and expel the rest. Similarly, while external sounds or words may enter one's ears without permission, they cannot become a part of one's mind or existence without personal consent and choice. He emphasizes that if something external becomes a part of one's internal system, it is because of one's own preference or selection. He advises against blaming the world for distractions, such as the noise of a passing airplane or birds, suggesting that if one finds no personal meaning or utility in these disturbances, they will naturally pass through without causing irritation. Ultimately, he asserts that assimilating any external influence is a personal decision, and one should focus on their own internal regulation rather than trying to control the unavoidable actions of the world.