" As long as you think there is a pretty good chance that you will achieve some of your dreams, as long as you think you have a shot at success, you experience your inner emptiness as “drive” and your anxiety as “hope.” And so you can remain almost completely oblivious to how deep your thirst actually is. Most of us tell ourselves that the reason we remain unfulfilled is because we simply haven’t been able to achieve our goals. And so we can live almost our entire lives without admitting to ourselves the depth of our spiritual thirst. And that is why the few people in life who actually do reach or exceed their dreams are shocked to discover that these longed-for circumstances do not satisfy. Indeed they can enhance the inner emptiness by their presence. "

― Timothy J. Keller , Encounters with Jesus: Unexpected Answers to Life's Biggest Questions