Bear with me in my thought process here. The world consists of many unbelievers and I am not an unbeliever. I believe that Jesus Christ is my only Lord and Savior, the one who bore all my shame, guilt, and suffering on a cross to save me. If I am a believer in Christ and the world contains a majority of unbelievers, then through logical conclusive reasoning I can conclude that I effectively do something different than most people through Christ.
"Do not be conformed to this world, but be transformed by the renewal of your mind, that by testing you may discern what is the will of God, what is good and acceptable and perfect." (Romans 12:2)
I am effectively not conforming any longer to the pattern of this world and I am beginning to be transformed by the renewing of my mind. That is what I am doing differently than most people.