My response to a question raised in Quora:

"What was the "hidden secret" in Think and Grow Rich?"

For me, having read the book back in the 70's, together with the author's 'Law of Success', the only "hidden message" I can sense is that our ultimate success achievement comes about - I always like to call it the fire test - only from the massive follow-up and consistent follow through of whatever we have set out to do at the onset, as part of our "Definiteness of Purpose", and reflected in our sweat equity of intense efforts and focused execution, while in hot pursuit of our desired outcomes or cherished dreams.

In a nut shell, talk doesn't cook rice.

I must add that internationally renowned success coach and peak performance strategist Anthony Robbins says it best:

To drive up my point, only action creates results.