When you are offended at any man's fault, turn to yourself and study your own failings. Then you will forget your anger. Epictetus
When you are praying alone, and your spirit is dejected, and you are wearied and oppressed by your loneliness, remember then, as always, that God the Trinity looks upon you with eyes brighter than the sun; also all the angels, your own Guardian Angel, and all the Saints of God. John of Kronstadt
Treat your men as you would your own beloved sons. And they will follow you into the deepest valley. Sun Tzu
Before preparing to improve the world, first look around your own home three times. Chinese Proverb
If you kick a stone in anger, you'll hurt your own foot. Korean Proverb
When your neighbor's wall breaks, your own is in danger. Icelandic Proverb