In his 15th book, the author of As A Man Thinketh lays out the eight core characteristics required for growing lifelong prosperity. These are:

• Energy, in body and mind
• Economy, in prudent management of one's resources
• Integrity in all your dealings
• System in all your actions
• Sympathy towards all men and things
• Sincerity in your approach to the world and yourself
• Self-reliance
• Impartiality in all judgement and action.

For each of these pillars, Allen explores the component parts of the pillar, building up a solid foundation for your existence that can weather any storm and emerge from it better and stronger.

The book's argument rests on Allen's belief in an absolute law of cause and effect in the mental and moral realm, which he views as just as fixed as the laws of physics. He asserts that circumstances are the direct result of one's inner thoughts and character. Therefore, cultivating these eight virtues is presented as the practical method to shape one's destiny and achieve true prosperity.

James Allen (1864–1912) was a British philosophical writer and a pioneer of the modern self-help and New Thought movements. He wrote Eight Pillars of Prosperity in the later stage of his career. This book is a practical extension of his core philosophy, providing a structured, virtue-based framework for applying that principle to achieve worldly success and stability.

His work is thematically aligned with that of other New Thought authors like Wallace D. Wattles (The Science of Getting Rich) and Florence Scovel Shinn (The Game of Life and How to Play It), who also emphasized the power of thought and spiritual law in achieving success.