Epictetus' quote emphasizes the importance of self-awareness and intentionality in shaping one's identity. By stating, "Tell yourself what you want to be," he encourages individuals to articulate their goals and aspirations clearly. This process of self-definition is the first step towards personal transformation.

The second part of the quote, "then act your part accordingly," underlines the necessity of aligning one's actions with their desired identity. It suggests that to become what you envision, you must actively perform the behaviors and choices that reflect that vision, reinforcing the connection between thought and action in personal growth.