After the holidays are over and the thrill of welcoming a new year has faded, it's not unusual for the blues to set in. If you find the season bringing you down, I hope this video will help you feel better.

Can seasonal affective disorder affect our pets? It turns out the answer is yes. And the urge to eat more, exercise less, and act a little grumpy is not a uniquely human experience.

No matter what is causing our "winter blues," it is important to stay on our own side and have faith that these moods can and will pass. To fight these battles, we must believe in our own resilience, in our ability to tolerate pain and to overcome the inevitable hurdles life brings.

It is particularly important to identify depression without sadness (anhedonia) because recent research indicates that it may be anhedonia rather than sadness that correlates with poor physical health.

For those of you with winter-SAD, it is not simply a winter condition -- it is a light-deficiency condition. Any time the light levels fall too low -- even in midsummer -- you are at risk for symptoms.

Happiness, when it comes from an external object, is always coming and going. And yet despite the fact that happiness is consistently inconsistent, permanently impermanent, we judge ourselves as failures when we cannot maintain consistent happiness.

As we slowly progress from the bright, burnished days of fall to the cold of the winter, it's no surprise that our moods start getting darker too. ...

When it comes to seasonal affective disorder (SAD) or just being negatively affected by less light and shorter days, this is a great opportunity to get your ducks in a row to stave off a depressive slide.

If you are among the many for whom the New Year has already lost its sheen of hope and rejuvenation, this post's for you.

With the build up to Christmas over, all that remains are the days until the New Year makes its entrance. This time can be equally stressful, but It doesn't have to be that way, says Harvard Medical School's Dr. John R. Sharp.

Don't aim at success--the more you aim at it and make it a target, the more you are going to miss it. For success, like happiness, cannot be pursued; it must ensue.