Why contentment isn't a goal.

I was reading a post on Roger von Oech's Creative Think blog.  In the post he asks "Why happiness is the absence of striving for happiness?" I'm trying to answer that question and here is the best thing I can come up with...

If your goal is contentment, you will always be shy of that goal.  To not be content is to be discontent.

Prehaps a better goal for acheiving personal happiness is to realize that it's not about you.  Then spend time working to acheive the well being of others.