Aaronic Priesthood, pg. 116-117; “The gospel of Jesus Christ serves to make bad men good and good men better. We are magnified by the word and the power. Priesthood enlarges the soul and ennobles our natures. It “administereth the gospel and holdeth the key of the mysteries of the kingdom, even the key of the knowledge of God.” (D&C 84:19.) And, finally, “all they who receive this priesthood receive me, saith the Lord.” (D&C 84:35.)” – Oscar McConkie
Matthew 23:12; “And whosoever shall exalt himself shall be abased; and he that shall humble himself shall be exalted.”
The only “thing” that makes any of us better is the work of the Holy Spirit within us. “I must decrease so He can increase” – John 3:30.