You cannot become a power in your community nor achieve enduring success in any worthy undertaking until you become big enough to blame yourself for your own mistakes and reverses.
Napoleon HillKeep your mind focused on what you want and act accordingly. You will achieve success!
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 Hill