"So then, my friends, because of God's great mercy to us I appeal to you: Offer yourselves as a living sacrifice to God, dedicated to his service and pleasing to him. this is the true worship that you should offer."
During Lent, we sacrifice small things. Some of us sacrifice big things. Chocolate, soda, pizza, meat, Facebook, Twitter, cursing, TV. But Lent doesn't end there. We sacrifice these things to teach ourselves self-discipline, not so we can continue to sacrifice better in future Lenten seasons, but so that we might learn how to sacrifice our whole lives to God.
So give up chocolate and enjoy that for it's difficulty. Yet at the same time, remember that God is asking not for our minuscule sacrifices but for our hearts. Our whole lives.