Have you ever seen something that was just so full that it could not help but overflow? Sometimes while pouring a soda, the glass can become so full that the soda overflows the side. Sometimes the same thing can happen with a bowl (or bag) of 
popcorn.
Could the same thing happen with a person? Perhaps you’ve seen it. A person can become so full of himself that he just overflows in praise of himself. (Have you ever heard the expression, “He’s so full of himself”?) Yes, it is evidenced when he gushes forth with his own accolades.
The Pharisee praying in Luke 18 is a classic example of this. In his two-sentence prayer, notice what his favorite word was, “God, I…I…I…I…I…” (18:11-12). Do you find yourself boasting about yourself to others? The Lord cautions us in Proverbs 27:2, “Let another man praise you, and not your own mouth.” If you find yourself overflowing in praise of “how good you are” and “how many great things you’ve done,” such is not “approved” of God (2 Cor. 10:18).