Rather than making drastic adjustments to your diet, you may be more successful at losing weight—and keeping it off—by making smaller changes. If you cut 100 calories a day, for example, you could lose a pound a month. It sounds simple enough, but where do those 100 calories come from? Follow these 10 easy suggestions to get started.

1. Skip the bread. It's probably happened to you a hundred times. You've just been seated at a restaurant, and your waitress brings out a basket of bread and butter. Don't eat it. Those one or two slices you devour before your meal add an extra 60 to 200 calories.

2. Use mustard. Swap the fat-laden mayonnaise on your sandwiches for mustard. While most mayo brands pack 100 calories into just one tablespoon, the average serving of mustard has only three.

3. Eliminate the oil. If you like tuna fish sandwiches, one of the simplest swaps you can make is to eat tuna packed in water instead of tuna packed in oil. The oil-packed variety contains 339 calories, while the water-packed kind has 191 calories.

4. Divvy up dessert. Split a piece of cheesecake with a friend. Eating half instead of a whole piece could save you up to 150 calories and 10 grams of fat (not to mention a few dollars).

5. Stop the pop. Soda is full of empty calories, and some studies show that even diet drinks are bad for you because they disrupt your body's ability to count calories. Drink water instead. Or for a refreshing twist, try seltzer with lemon or lime.

6. Roast, don't fry. Eating a serving of roasted chicken instead of fried chicken could save you almost 150 calories in one meal.

7. Don't supersize. You don't even have to skip the fries altogether. Simply downsizing to a medium instead of a large will save you 188 calories.

8. Slash the sugar. When ordering a cup of morning joe , do you get whipped cream on top? Next time, say no, and you'll cut 100 calories before you even start your day.

9. Think thin. Eating two slices of thin crust pizza instead of thick pan pizza could save you about 160 calories. Skipping the pepperoni on those two pieces will eliminate another 80.

10. Add mushrooms. When making stir-fry or shish kebabs, use a little less meat and a few more mushrooms. Substituting some portobello mushrooms for a couple ounces of beef will reduce your calorie intake by 100.