The first requisite for success is to develop the ability to focus.

My success is due more to my ability to work continuously on one thing without stopping than to any other single quality.

The secret of success is focus of purpose.

Success is the product of the severest kind of mental and physical application.

If you worry about yesterday's failures, then today's successes will be few. The future depends on what we do in the present.

I'm either going to go completely mental, completely bankrupt, or have the best success of my life.