Advent Reading: The Imitation of Christ #7
Do not think yourself better than others lest, perhaps, you be accounted worse before God Who knows what is in man. Do not take pride in your good deeds, for God's judgments differ from those of men and what pleases them often displeases Him. If there is good in you, see more good in others, so that you may remain humble. It does no harm to esteem yourself less than anyone else, but it is very harmful to think yourself better than even one. The humble live in continuous peace, while in the hearts of the proud are envy and frequent anger.
Thomas a Kempis, The Imitation of Christ, Book 1, Chapter 7