"Whenever we are filled with evil thoughts, we should throw the invocation of our Lord Jesus Christ into their midst. Then, as experience has taught us, we shall see them instantly dispersed like smoke in the air. Once the intellect is left to itself again, we can renew our constant attentiveness and our invocation. Whenever we are distracted, we should act in this way."
St. Hesychios the Priest.
"And let us not grow weary while doing good, for in due season we shall reap if we do not lose heart." Galatians 6:9