In "The Glass Castle," Jeannette Walls reflects on her tumultuous upbringing and the challenges she faced growing up in a dysfunctional family. The quote "What doesn't kill you will make you stronger" encapsulates her journey of resilience and personal growth. Through hardships, including poverty and instability, she learns valuable life lessons that ultimately shape her into a stronger individual. Walls’ experience illustrates the idea that adversity can lead to greater strength and self-awareness.

This sentiment resonates throughout her memoir, as Walls recounts her relationship with her parents, particularly her father's erratic behavior and her mother's neglect. Rather than succumbing to her difficult circumstances, she harnesses her experiences to build a better life for herself. The quote serves as a powerful reminder that facing and overcoming obstacles can lead not only to personal strength but also to a deeper appreciation for life's complexities.