Be ye perfect as your Heavenly Father is perfect. -Mt 5:48
St. Anthony went on from day to day, stimulating himself to virtue. St. Anastasius said of him, that he always looked upon himself as a beginner, as if every day were the first in which he was serving God, and as if in the past he had done nothing good, and were but just setting foot in the way of the Lord, and taking the first steps on the road to heaven. And this was the very last admonition he left to his monks at his death: “My sons,” he said to them, “if you wish to advance in virtue and perfection, never give up the practice of considering each day that you are then beginning, and of conducting yourselves always as you did on the day you began.”
Thus, also, we find that St. Gregory, St. Bernard, and St. Charles acted and advised others to act. To render clearer to all, the necessity and utility of this method, they made use of two beautiful comparisons, saying, that we must act in this like travellers, who do not regard the road they have gone over, but, rather, what remains for them to traverse, and this they keep always before their eyes, even to their journey’s end.
Text from A Year With the Saints (New York: P.J. Kenedy & Sons, 1891).