When I think about it, my entire life--if I'm doing things right and for the right reason--is a sacrifice. I am human, and I know what I want. But often I do not know what I need, and especially what is best for me. I have spent my life learning to trust my Heavenly Father that He not only knows what is best for me, but will help it all to come about if I sacrifice my selfish, limited-vision of desires and wants.
True, sincere sacrifice on my part is aligning my will to His and being obedient to the commandments that have been given to me. And then truly Sacrifice will bring forth the Blessings of Heaven.