In "The Woman Who Walked in Sunshine," Alexander McCall Smith emphasizes the importance of having personal joys and interests in life. He suggests that without these preferences, individuals can slip into unhappiness, which can have dire consequences. This idea highlights the essential nature of happiness and the role it plays in our overall well-being.

The quote underlines a universal truth that acknowledging and pursuing what makes us happy is crucial for survival and mental health. McCall Smith's narrative invites readers to reflect on their passions and the impact of happiness on their lives, urging them to cherish and prioritize their personal joys to avoid the risks associated with unhappiness.