What’s Missing?

What more could I possibly want? Don’t I already have everything? I’ve had every bit of joy and happiness that I ever could have imagined. Actually, even far more than that. But yet, periodically, a little sliver of emptiness, incompletion, seems to seep in. Because something seems to be missing. I don’t have a clue what that might be. I can’t determine its source. It’s sort of a small shadow that covers a small edge of my sun. But, if I don’t know what it is, how will I know what to do about it?