4. Scale-gazing
It's a good idea to document weight loss, but scale hopping is another way to get caught in the numbers game. The scale will give you good news in the morning when your stomach is empty but level a blow in the evening when you've just had a meal. The most important thing to ask is, Do I like what I see when I look in the mirror?

5. Not limiting alcohol consumption
Whoever invented the term empty calories had to be referring to beer: One 12-ounce serving contains anywhere from 140 to 210 calories. Also, the sugars in alcohol break down into carbohydrates that are difficult for the body process, which is why you see them lingering around the waist. Cocktails can be major calorie-busters, particularly those creamy, frozen poolside concoctions like pina coladas. Stick with low-calorie mixers and one type of alcohol for a reasonably low-calorie cocktail.

6. Not exercising
Weight loss can be quickly aided along with exercise. But don't choose an activity that you abhor, or you won't stick with it. If walking on a treadmill is chore rather than challenge, pick an activity that piques your interest, such as yoga, martial arts or ballroom dancing. Grab a DVD that looks fun, if you prefer to work out at home. Not only will you lose weight, you'll learn a new skill.