I think that means that you need to keep searching for a life purpose that inspires you.
Mine is: To explore, to teach, to be my own voice.
And I still get as many goosebumps today typing that and thinking about it as I did over a year ago when I discovered it.
A few things about purpose that might help guide your thinking:
It is HIGHLY HIGHLY personal purpose. it is for YOU and YOU alone. The beauty of THAT is that it's personal nature is such that it inspires and moves YOU in a very personal and emotional way, and that movement and inspiration spirals OUT of you and touches others. But it's not FOR others. it's not to serve others. or any of that kind of thing that you commonly see in life purposes (especially in the self help arena).
The other big clue is that you don't create your life purpose...you DISCOVER IT. What does that mean? It means you are already radically fulfilling your life purpose and you have been doing so all your life. so the key to finding it is to look at your life and ask yourself what the positive, inspiring purpose of everything you've done and been up to this point has served.
And when you stumble upon it, you will have a HUGE emotional reaction...I had goosebumps...some people cry (like Steve mentioned in his article)...it will be a game-changing cathartic experience. And if you haven't had that yet, then keep searching until you do have it because it is so worth it.