In her novel "My Sister's Keeper," Jodi Picoult explores the theme of identity and the facade people create in their lives. The quote suggests that by living as if one is in a movie, individuals can escape the harsh realities of their existence. This metaphor highlights the struggle to confront uncomfortable truths, such as the artificiality of certain aspects of life, including relationships and personal feelings.

Additionally, the quote implies that living in denial can prevent genuine self-expression and understanding. The walls being paper and the food plastic symbolize the fragile and insubstantial nature of the constructed reality. Ultimately, this invites readers to reflect on their authenticity and the courage needed to face life's complexities without the comforting illusions that often shield us from painful truths.