The idea that the key to professional and personal fulfillment is in our hands is a very provocative idea, and self-made millionaire businessman Charles F. Haanel not only believed this, he lived it. Even better, he wrote the instruction manual for how to use the tools that we all have available—our minds and spirits—to open the door to happier, healthier, smarter, more successful selves. By outlining the laws and principles that dictate achievement and personal development, Haanel makes creative power, motivation, and action accessible. Part philosophy, part positive psychology, part business doctrine, The Master Key System is a work that over the last century has inspired and motivated scores of "employees" to make their careers-and lives-a booming success.