The quote from Max Brooks' "World War Z: An Oral History of the Zombie War" emphasizes the power of self-belief. The idea conveyed is that confidence in one's abilities can eliminate the concept of impossibility. When a person truly believes they can achieve something, doubts and barriers become insignificant, allowing them to pursue their goals with determination and resilience.

This perspective encourages individuals to cultivate a strong sense of self-efficacy. It suggests that through belief in oneself, one can face challenges more effectively and push past limitations. In essence, the quote serves as a motivational reminder that mindset plays a crucial role in overcoming adversity and achieving success.