Go see this article in the Daily Telegraph (U.K.) by Ambrose Evans-Pritchard. He is International Business Editor for the Telegraph in London.
Evans-Pritchard thinks the world is essentially coming to an end, relatively soon. I believe Evans-Pritchard is predicting another 1930s style world-wide depression. He may even be anticipating deflation, every economist's nightmare.
So, if you are experiencing excessive happiness, give his article a read. He'll scare the stuffing out of you.
Here is another article that takes somewhat the same view, from CNBC. It cites a fellow with the unlikely name of Daryl Guppy.
Are these fellows correct? I wish I could tell you I'm sure they're wrong. Hat tip to Matt Drudge for the links.