New York Times - Choose to be grateful. It will make you happier.

For the holiday spirit! I love it when cause and effect can also be reversed. As positive psychology has been saying, you don’t have to be successful to be happy. It’s the other way around. And you don’t have to be happy to be grateful. Again, it’s the other way around. So be happy by choosing to be grateful! Oh, but beware, apparently there are side effects. Like, you wanting more sweets. Aptly called: The Pumpkin Pie Paradox.