You do have to track everything you eat, which is easy if you're following a Weight Watchers' recipe or eating a prepackaged food with the points pre-calculated. It gets a bit trickier when you prepare your own recipes as you have to break down the ingredients and do the math -- although that's certainly simpler if all you're doing is, for example, grilling a chicken breast and making a salad. And, under the new "Freestyle" program, that's a meal that could be points-free under the current guidelines, depending upon whether or not the salad is dressed.
"If your diet consists of lots of sports drinks, sugar-sweetened drinks like fizzy pop and flavoured waters, or sugary foods like chocolate and cakes, it will make losing weight harder. While whole fruits and vegetables are undoubtedly good for you, they can also sometimes cause weight gain if you eat too much, as they have high levels of natural sugars in them. Low-fat food options might have high amounts of added sugar in there too, so make sure to check the food label.