Do not many of us who fail to ...

Do not many of us who fail to achieve big things. . .fail because we lack concentration--the art of concentrating the mind on the thing to be done at the proper time and to the exclusion of everything else?
Do not many of us who fail to achieve big things. . .fail because we lack concentration--the art of concentrating the mind on the thing to be done at the proper time and to the exclusion of everything else?
 John D. Rockefeller

More phrases

Being self-made is a state of mind, and once you put that mentality to work, your success will come.
 Dave East
A lot of people change for good. Some people just fall off. Just trying to progress in anything, no matter what you're doing, I feel like any progression you make... some people aren't gonna be around you that were around you.
 Dave East
What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.
Don't settle in the land of barely enough. That is where you are, it is not who you are. That's your location, it's not your identity. No matter what it looks like, have an abundant mentality.
Everything in your life, every experience, every relationship is a mirror of the mental pattern that is going on inside of you.

Quotes from the same author

The task is simple. We will organize children and teach them in a perfect way the things their fathers and mothers are doing in an imperfect way.
 John D. Rockefeller
My mother was given to a typical question: "We have always done this. Why should we do anything else?" But my wife's typical question was "We have always done this. Why don't we do it another way or, better still, why not do something else?
 John D. Rockefeller
Don't be afraid to give up the good to go for the great.
 John D. Rockefeller
I believe the power to make money is a gift from God...to be developed and used to the best of our ability for the good of mankind.
 John D. Rockefeller
I always tried to turn every disaster into an opportunity.
 John D. Rockefeller