In "The Mermaid Chair" by Sue Monk Kidd, the narrative explores the theme of self-discovery and the hidden potential within individuals. The book delves into the complexities of identity and personal growth, revealing how many people remain unaware of their own capabilities and strengths. This theme resonates throughout the protagonist's journey as she navigates her emotional and spiritual challenges.

The quote, "So few people know what they're capable of," encapsulates the essence of the book, emphasizing the idea that many individuals live without recognizing their true potential. This message encourages readers to reflect on their own lives and pursue self-awareness and fulfillment, suggesting that embracing one's abilities can lead to profound transformation and liberation.