The book Nothing Is Worth More Than This Day is a collection of quotes that encourage readers to find joy in the present moment. The authors compiled 337 quotes from a diverse group of people, including philosophers, artists, and musicians, all of whom share a common belief in the importance of embracing life's simple pleasures and finding happiness in everyday moments. The book is designed to provide inspiration and encouragement to readers, reminding them to appreciate the present and find joy in life’s small wonders.