Weight train. The more lean muscle mass you have, the more calories you burn.
Eat regularly and often. Try to eat every 2 to 3 hours. 3 meals a day with a snack in between.
Drink plenty of water. At least 8 glasses per day. Your body is made up primarily of water, plus it helps to "flush" your system.
Portions control. Bigger is not better when it comes to food. A portion should be about the size of your fist.
Eat a variety of food. If you eat the same food everyday, you will get the same nutrients everyday.
Prevent hunger! It is better to eat bad than not at all. If you wait until you are hungry more than likely you are going to over-eat. Protein rich meals will satisfy your hunger longer and help maintain lean body weight.
Carbs are not bad. Extra calories are bad. Carbs in fact are your bodies primary energy source. Choose Complex carbs not sugars.
Increase your fruit and vegetable intake. These make for great low calorie snacks and desserts and are full of needed vitamins and minerals.
Reward yourself. If you try to stick to a strict diet, more than likely it won't last very long. Try to eat as healthy as possible during the week, and allow yourself to indulge a little on the weekend.
Limit excess calories. Reduce fried foods and sugars from your diet. Most drinks such as beer, soda, punch, etc are full of sugar and excess calories . Instead try to have water or low fat milk with meals.