"And whosoever shall exalt himself shall be abased, and he that shall humble himself shall be exalted." (Mt. 23:12)
The proudest person is not he who brags about himself with pride, but he who brags about being very humble...
We owe greater gratitude to those who humble us, wrong us, and douse us with venom, than to those who nurse us with honour and sweet words, or feed us with tasty food and confections, for bile is the best medicine for our soul.
Let us not examine whether we were justly or unjustly embittered, out of love or viciousness, or whether we are at fault slightly or not at all. We should accept with joy the spiritual benefit that every trial leaves behind, glorify God for everything and be grateful to the people who wrong us.
We should not be anxious in this life about the wrong done to us by other people or the demons, for neither does it trouble God, since He writes them down and keeps them with interest in His heavenly savings bank.
He who pursues human justice is foolish, but even more foolish is he who does not forget the injustices done to him by others and the kindness he has shown to others.
(Elder Paisios of Mount Athos: Epistles)