Think you know what someone else is doing? Think again. You probably don't. They probably don't know what you are doing either. Or thinking. Humility comes from realizing that, much as we like to think we know everything, we really know very little. Only God knows what goes on in the human heart and brain. Only God sees what someone is doing all the time. Only God knows motives. Humbly we need to accept our ignorance of others and their ignorance of us and realize that God alone knows fully. He is our Lord. May we act knowing that.