Want to avoid that "thing" that’s been going around? Your mood may have something to do with it.

People who are carefree and calm seem to have extra armor against winter bugs. They get sick less often -- and even if they do pick up a bug, they tend to have fewer symptoms. Yep, putting on a smile could be just the ticket.

Don’t Worry, Be Happy
Researchers recently asked healthy volunteers to describe their moods and then exposed them to a cold or flu virus. People who described themselves as happy, full of pep, and at ease -- versus depressed, anxious, or hostile -- had fewer symptoms like coughing, achy joints, and sinus pain. The researchers concluded that positive emotions may strongly influence the human immune system. (Got sinus troubles? Take this RealAge quiz for self-soothing advice.)

How to Get There
Everyone wants to be happy, but what makes one person light up may do little to lift another. Step one is figuring out what makes you happy. This interactive article can help clue you in. Then, try these other tips and tricks for boosting your emotional well-being:

• Do a plate check. Certain foods -- like those rich in healthy omega-3 fats -- can be good for the spirit. Get in the mood with these other feel-good foods.
• Grab your trainers. A simple walk or light workout is a surefire way to elevate your body’s natural "happy" chemicals. Video: Try this resistance-band workout you can do in the comfort of your own home.
• Phone a friend. There’s a reason why social butterflies seem so chipper. And it’s this.

Try these five simple steps to loving your life.