In "The Art of Living," Epictetus emphasizes the distinction between what we can control and what we cannot. He explains that our thoughts, choices, and desires fall within our realm of influence, allowing us to shape our character and reactions. These internal aspects of ourselves are crucial for our personal development and well-being.

Conversely, Epictetus points out that external factors, such as our physical bodies, possessions, and how others perceive us, are beyond our control. By recognizing this dichotomy, we can focus our energy on the elements we can influence, leading to a more fulfilling and virtuous life. This perspective encourages resilience and contentment, regardless of outside circumstances.