By a persistent effort of will it is possible to change the whole body. The athlete must always keep in mind this concept of change and progression. He must never accept his limitations as being permanent, because they are not.
Emil ZatopekYou can't climb up to the second floor without a ladder. When you set your aim too high and don't fulfill it, then your enthusiasm turns to bitterness. Try for a goal that's reasonable, and then gradually raise it.
Emil Zatopek