The Science of Being Great by Wallace D. Wattles.

The Science of Being Great by Wallace D. Wattles.  The Science of Being Great, published in 1910 by Wallace D. Wattles, is a self-help book that teaches readers how to achieve personal greatness through self-awareness, right thinking, and spiritual development, focusing on aligning one's life with an inner, "pure idea" of power and greatness. It's a practical guide for unlocking potential, emphasizing obedience to the soul and abandoning outdated ideas to live a more powerful and purposeful life.