We cannot fully find ourselves - that is, become fully what God intended us to be, live life in the richest measure, find a deeply satisfying happiness - except through the sincere gift of ourselves in love to God and to those He is placed in our lives. Saint John Paul II understood this truth as fundamental in our lives. The Law of the Gift is the only path to personal fulfillment and to joy in this life and the next. The Consecration in the Mass is a supreme instance of this law, and the primary source of the grace that helps us live it. When we ask for a heart like Christ's, we are asking to live the Law of the Gift.
I love your scars. Nothing is happier in this life than to hear on the lips of another, or to read in the eyes of another, these words: “I love your scars.” I love the way you have given of yourself for me, the way you have given me your time, you're listening ear, your help, how you were there for me when I needed you, even when it cost you tiredness and sacrifice. I love your scars. We cannot, Saint John Paul II tells us, fully find ourselves except through the sincere gift of ourselves.
(From A Biblical Way Of Praying The Mass by Father Tim Gallagher, O.M.V.)