"Acres of Diamonds" is a motivational lecture-turned-book written by Russell Conwell, first delivered in 1883 and later expanded into a book in 1890. The title is derived from a parable Conwell uses to illustrate the idea that opportunities for success are often right in front of us, if only we recognize and seize them.

Conwell, a Baptist minister, delivered the lecture thousands of times throughout his career, often to raise funds for educational institutions. The central message of "Acres of Diamonds" is that each person possesses the potential for success and wealth within their own circumstances, and they need only to recognize and cultivate it.

The book recounts the story of a Persian farmer named Ali Hafed who sells his farm in search of diamonds, only to discover that the man who bought his land found an abundance of diamonds there. Conwell uses this parable to emphasize the importance of recognizing the value of what one already has and to encourage readers to look for opportunities within their own lives rather than constantly seeking them elsewhere.

Throughout the book, Conwell stresses the virtues of hard work, perseverance, and resourcefulness. He argues that success is often the result of diligent effort, determination, and the ability to recognize and capitalize on opportunities. Conwell also emphasizes the importance of using one's talents and resources for the betterment of oneself and society.

"Acres of Diamonds" became immensely popular and is considered a classic work of self-help and personal development literature. Its timeless message continues to inspire readers to recognize and seize the opportunities for success that exist within their own lives.