Robert S. de Ropp's Self-Completion is a posthumously published guide to spiritual self-improvement.

The book blends scientific and mystical perspectives, exploring the nature of reality and the human condition. It emphasizes distinguishing between genuine spiritual work and self-deception, offering practical advice and exercises for personal transformation. De Ropp draws on his experiences with various esoteric traditions and his understanding of scientific principles to present a unique synthesis. The text also critiques societal trends and explores the potential for creating intentional communities focused on spiritual growth and ecological responsibility.

Ultimately, the book aims to help readers find meaning and purpose in their lives.