An excerpt from movie "Beautiful Creatures" which truly define what Sacrifice is..

"I just want to talk to you. About a word we don't hear much anymore - Sacrifice. It's not what I'd call a modern word. People hear the word "sacrifice" and they become afraid that something will be taken away from them. Or they'll have to give up something they can't live without. "Sacrifice," to them, means "loss," In a world telling us we can have it all. But I believe true sacrifice... is a victory. Because it requires our free will, to give up something or someone you love, for something or someone you love more than yourself. I won't lie to you -- It's a gamble. Sacrifice won't take away the pain of loss. But it wins the battle against bitterness. The bitterness that dims the light on all that is of true value in our lives."