He opens the 16 minute recording with the following statement, "I want you to make a test that will last 30 days. Now, it isn't going to be easy. If you'll give it a good try, it will completely change your life for the better." It is a simple secret and all you have to do is try.

The core message is the simple yet profound idea that "we become what we think about." Nightingale elucidates that success is not just about making money but about progressing towards a worthy ideal and providing service or value. He introduced a practical approach towards achieving personal success through a 30-day experiment focusing on positive thinking and action towards one's goals.

For those willing to embark on this journey, Nightingale proposes writing down a clearly defined goal, maintaining a positive outlook, and dedicating oneself to exceeding their usual efforts. He suggests that through this process, not focusing solely on how to achieve the goal, but rather maintaining a clear vision of where one is heading, is crucial. The experiment also involves starting over if necessary until the habit of positive thinking is firmly established.