"It's easy for positive emotions to build and grow. That's one reason why the holiday spirit is so contagious. When one person is happy, it can lift the spirits of others. They in turn pass this happiness on, and it all keeps going like a game of happy tag. It's no surprise that people say they wish the holiday mood could continue all year.

Being in a spectacularly great mood doesn't mean there has to be a spectacular event to look forward to. In fact, it's often the simple things that are the most meaningful and create the most joy for people." -- Steven Dowshen, MD