Commonly Broken New Year's Resolutions

Eat Healthier

Why it's tricky: Only 33 percent of adults eat the recommended daily amount of fruit, and only 27 get enough vegetables, found surveys from the U.S. Centers for Disease Control and Prevention.

Make it stick: Start by satisfying your afternoon munchies with an apple instead of a cookie. If you do this 10 times in a row, you'll actually start to crave the fruit at that time of day, advises Susan B. Roberts, PhD, a Tufts University professor of nutrition as well as professor of psychiatry. This strategy has worked for many of the out-of-control snackers in the weight loss groups she's led.