It is quite a wrong thing, therefore, to say that you “give up” something during Lent. Our Lord never asked us to give up anything; He asked us to exchange: “What exchange shall a man give for his soul?” When someone is in love with God, he finds that there are somethings he can get along without (his own pleasure), and something else he cannot get along without, namely, the peace of soul that comes from obeying God’s Will. So he exchanges the one for the other, surrenders the lesser good to gain a Kingdom. He makes such a series of profitable exchanges every day he lives.
—from Peace of Soul by Venerable Fulton Sheen, Ch. 9: Repression and Self-Expression