Have you ever made a meal and it seemed like something was missing?  It was tasteless.  So you try and add different spices trying to spruce it up but it is still missing that one ingredient, salt.  Something simple like salt can make all the difference.  It is like that in life, we try so many different things trying to find fulfillment, but nothing works.  There is still something missing even though we have tried it all.  That missing thing is Jesus and the life of Christ.