I'm reading a book right now by Andy Stanley called The Principle of the Path.  It is an easy, yet profound in its simplicity.  It is a challenge to us to take a good look at the path we are traveling in life to see if that path will get us to where we want to go.  I plan to preach on this in the future, but here's an excerpt from the book:

"Every time you eat something you know you will regret, you fall into this category.  Every time you talk yourself out of exercising, you talk yourself out of a preferred future.  Every time you light up a cigarette, lie to your spouse, spend money you don't have, you act as if today is in no way connected to tomorrow.  You see danger.  Yet instead of taking refuge, you keep going.  You know life is connected.  You just don't live as if it is.  You make decisions today as if today is isolated from tomorrow."