We walk through life "sacrificing" in the shallow sense of the word. Not many would voluntarily do so,(sacrifice) that is. Yeah we may give up sweets. Or indulging in extra this or that. But to ultimately sacrifice something crucial. Something nearest to you, that if missing you bleed. No not many at all would do this. When asked this question it does not always mean sacrificing to the 10th degree what God wants us to do is put someone else before ourselves. Take the I, me out of the equation. Show that you can sacrifice oneself for another. That is all. It is that simple.
John 15:13 Greater love hath no man than to lay down his life for his friends.