The Gospel message is NOT pull yourself up and do better. The Gospel message is NOT try harder and do nice things for people. This would be glorifying ourselves and man. The Christmas Carol story where Mr. Scrooge learns how to be nice to people is NOT the true Gospel.
The Gospel message IS God has come down for those who are incapable of doing better. The Gospel message IS the Word became Flesh. The Gospel message IS God taking on flesh. Flesh Who bore our sin in order that than through faith in Him that He might do better with us and through us. This is when His Glory is revealed.
~ from a sermon by Sinclair Ferguson