Fasting is a tool, a spiritual discipline, whose whole goal is to bring us closer to the Lord. It does not make us holy, it does not earn acceptance from God, it is a way to break the hold of the world on hearts so that we can give them wholly to God.
Meditation for Christians is far different then the mind- emptying practice of eastern religions. Rather than emptying the mind, Christian seek to fill the mind with thoughts of God.
Can you imagine walking through your day always being aware of the presence of God? Wouldn't this change your way of thinking, relating, habits and conversations? Do you think you might experience more peace, hope and joy?
The term, "Spiritual Discipline" brings images of punishment, being deprived and enduring hardship, but the root word is "disciple," which is a "learner," a "follower," and a "believer."