So, what is Lent? Essentially, it is marking the 40 days leading up to Easter, when Jesus was tempted in the desert by the devil, before He finally made the biggest sacrificial gift of all in giving His life to atone for our sins. So now we mark those 40 days by living sacrificially ourselves in some way or another.
Now, I am not trying to belittle giving something up for Lent (that is the tradition after all)! I am simply saying that for me, the 2 important parts of observing Lent should be (1) remembering and recognising why we 'celebrate' it, and (2) that what I do to observe Lent, should make a difference to the world around me, not just to myself.