"Begin each day by telling yourself: Today I shall be meeting with interference, ingratitude, insolence, disloyalty, ill will, and selfishness-all of them due to the offenders’ ignorance of what is good or evil. But for my part I have long perceived the nature of good and its nobility, the nature of evil and its meanness, and also the nature of the culprit himself, who is my brother; therefore none of those things can injure me, for nobody can implicate me in what is degrading."
— From the Meditations of Marcus Aurelius. And hell yeah it does help to begin each day by telling yourself this.