You must master the habit of procrastination and eliminate it from your wake-up. This habit of putting off until tomorrow that which you should have done last week or last year or a score of years ago is gnawing at the very vitals of your being and you can accomplish nothing until you throw it off.
Napoleon HillConcentration, itself, is nothing but a matter of control of the attention! Learn to fix your attention on a given subject, at will, for whatever length of time you choose, and you will have learned the secret passage-way to power and plenty! This is concentration!
Napoleon HillThe major weakness of all educational systems is that they neither teach nor encourage the habit of definite decision.
Napoleon Hill