Now, go to your room, take the same seat, the same position as heretofore, and mentally select a place which has pleasant associations. Make a complete mental picture of it, see the buildings, the grounds, the trees, friends, associations, everything complete. At first, you will find yourself thinking of everything under the sun, except the ideal upon which you desire to concentrate. But do not let that discourage you. Persistence will win, but persistence requires that you practice these exercises every day without fail.