 It's a change of attitude. Paul said in Philippians 2, 4-7, Do not merely look out for your own personal interest, but also for the interest of others. Have this attitude in yourselves, which was in Christ Jesus, who, although he existed in the form of God, did not regard his equality with God a thing to be grasped. But he emptied himself, taking the form of a bondservant and being made in the likeness of men.