The source of humility is the habit of realizing the presence of God.
“Now, my son, the Lord be with you, and may you have success and build the house of the Lord your God, as he said you would. May the Lord give you discretion and understanding when he puts you in command over Israel, so that you may keep the law of the Lord your God. Then you will have success if you are careful to observe the decrees and laws that the Lord gave Moses for Israel. Be strong and courageous. Do not be afraid or discouraged.”
1 Chronicles 22:11-13
The New International Version