キー・システム
The original Master Key System contained 24 parts or modules of study. The allegedly "lost" chapters of the Master Key System, chapters 25-28, which are found in some editions, are not original, but have been copied from the chapters 11-14 of "A book about You". Among the key points of Haanel's system are what he refers to as the laws of concentration, attraction, and harmonious thinking and action. Unique to the Master Key System is a set of exercises that accompany each chapter, and which are systematically building upon each other — they are what makes the Master Key System a system. Another important aspect of the Master Key System is the element of "Truth". The understanding of "Truth" is derived from the understanding that Spirit is all there is, and that it cannot be other than perfect. Truth provides readers/students with certainty, courage and determination to change their life for the better.