Much of everyday life is filled with opportunities to be distracted. Our possessions... entertainment... cares and anxieties... and even the passionate desire and pursuit of things, some good and not so good, can keep our minds and hearts caught up in a flurry of activity.
Christianity is about the heart, and the Bible says that we cannot get to heaven on our own good works. No matter how good we are, we cannot be good enough, because God is perfect, and we're always going to be less than perfect.