It was recorded by Earl Nightingale, the co-founder of Nightingale Conant and known as the Dean of Personal Development. His voice alone is worth listening to it over and over again - and the content makes it life changing.
I bought this audio a long time ago and it has made a huge difference in my life, so when I found it on youtube today, I knew I had to share it here.
It contains the simple core perspective and behavior behind every great success.
If you choose to commit to the 30 day test and feel it would help you, make your commitment public in this thread and let us know how it goes!