Concentration is the magic key that opens the door to accomplishment.
The first law of success is concentration. Bend all of your energies to one point, and go directly to that point, looking neither to the right nor the left.
In time, you can become what you earnestly desire to be, if you set your face in the direction of the things you want and bring all your powers to bear towards its attainment.
When your physical and mental resources are focused, your power to solve problems multiplies tremendously. To do two things at once is to do neither. Success is the result of well directed energy.
Nothing can add more power to your life as much as concentrating all your energies on a limited set of targets.
The sun's rays do not burn until brought to a focus.