Being a follower of Jesus makes one's life NEW and notice the words that said old things have passed away. When you make that decision to follow Jesus and are baptized, then your "old things" do not matter to God anymore; you are NEW.
His coming divided the history of the world into two parts
Every man's life is divided into "Before Christ" and "After Christ." We come to know of him, we learn about him, then we decide. We decide to reject him and all that he stands for. Or we believe in him, and receive all that he has to offer.