Habit grows out of environment–out of doing the same thing in the same way over and over again–out of repetition–out of thinking the same thoughts over and over–and, when once formed, it resembles a cement block that has hardened in the mold–in that it is hard to break. Habit is the basis of all memory training, a fact which you may easily demonstrate in remembering the name of a person whom you have just met, by repeating that name over and over until you have fixed it permanently and plainly in your mind.
