In "The Art of Living," Epictetus highlights that personal happiness hinges on three key factors: one's will, one's perception of events, and the application of one's thoughts. This perspective emphasizes that individuals have control over their internal responses, regardless of external circumstances. By focusing on our own will, we shape our happiness through conscious choices and attitudes.

The philosopher suggests that how we interpret and engage with life’s events plays a crucial role in our emotional well-being. Essentially, it is not the events themselves that determine our happiness, but rather how we choose to perceive and respond to them. Thus, cultivating positive thoughts and effectively applying them can lead to greater fulfillment.