The word sacrifice tends to carry a negative feel to it when stressing the idea of giving up something. But if I look beyond this negative, there is also an implied sense of hope, that is, in my giving up something, someone else gains. That is an act of love.
I can view sacrifice as a loss to me, but the better view is sacrifice as a gift to another. It is and/both, not either/or. Sacrifice is gift. It is giving. Which way I see it, like all things, depends on my attitude.