Lose weight without dieting 

Eat breakfast. Studies show that eating breakfast is associated with keeping weight off once you've lost it.

Fill up on low-cal foods. Start every meal with the items on your plate that are lowest in calories. By the time you get to the other foods, you won't be so hungry, possibly decreasing your total intake.

Begin with soup. Starting lunch or dinner with a broth-based, vegetable-filled soup will curb hunger so you'll be less tempted to eat higher-calorie foods.

Arrive fashionably late. Without as much time near the buffet table at parties, you'll eat less.

Divide your lunch. Afternoon snacker? Cut your lunch in half: have part at mealtime and the other half later in the afternoon.

Swap mustard for mayo. A tablespoon of mayonnaise has 100 calories, compared with 10 calories for a tablespoon of yellow mustard.