Wisdom

Proverbs
The book of Proverbs is all about wisdom.  We are exhorted to follow after wisdom, to give all we have for understanding, and to esteem wisdom above all else.  I find this message to be particularly important in today's culture where we are continually pressured to follow after foolishness and cheap thrills.
Sometimes it may seem difficult to forsake the world's dreams and seek wisdom and understanding in God.  But I think we (who try to do so) can admit, at least deep down, that a life of wisdom is a life that is sustainable and full of integrity.  Wisdom leads inevitably to following after God because God is the author of wisdom.  From that come moral absolutes, which are far from popular in a relativistic world.  I won't get into the moral absolute vs. relativism debate here, but you should read up on it (check out Greg Koukl and Stand to Reason, for starters).  You'll see that wisdom really is the only way to go.