Lent is a season where many people make promises to do things for a variety of reasons, both secular and sacred. While some abstain for disciplinary purposes in their faith, some abstain for reasons more practical, like getting off of sugar. The latter group would try to link spiritual fitness with their own physical or emotional well-being. Some feel the pressure (as I have at one point in my life) that if other people are doing it then so should I! Good old fashioned Lent peer-pressure! Sad to say, but this point is something that not even well-meaning evangelicals get entirely right.
I do not mean to be overly critical of people who observe Lent. While it is not a biblical mandate or event (then again, neither are summer camps), I view it generally as helpful to one’s faith. The season should be a time used for preparation and spiritual discipline. It is a time of personal reflection between the individual and God. The individual can also come to the sides of other believers and persevere in the time of discipline, as the whole Church anticipates the Passion Week of Christ and his subsequent death on Good Friday. The time should make the triumphant resurrection of Christ on Easter all the sweeter.
While people often give up things, they should also consider adding something on as a discipline. Whatever they choose it should be done with the expressed purpose of conforming their will (through the power of the Holy Spirit) to the will of the Father. This is quite often done in the act of self denial and taking ones cross to follow in the footsteps of Christ who leads us to the Father. It is also a time of exercising spiritually, training ourselves as an athlete preparing for the Olympics. We should learn discipline and rely upon Christ for strength.
I wholeheartedly endorse Lent as a spiritual practice as long as it is personal, reflective and deeply Christ-centered. This video might help you along this 40 day journey of faith.