If hungry between meals, choose a healthy snack which brings in a reasonable amount of calories.
For those able to exercise: When you start feeling hunger, challenge yourself with a short burst of exercise (such as 50 squats, or 5 minutes lifting dumbbells, or 20 pushups) - and only then reward yourself with one of the snacks. By doing so, you are revving up your metabolism, such that the calories you take in are promptly burned.
Another interesting fact worth mentioning: Exercise in itself may help control hunger. Since the heart rate goes up, i.e. the heart is pumping harder, more blood with nutrients is being delivered to the vital organs (including the brain), which may curtail the sensation of hunger.
Learn to predict your body's hunger schedule, and to intercept it before it kicks in: E.g., drinking a cup of tea or coffee, a glass of water, or a diet drink prior to feeling hungry may fill you up and tie you over to the next meal.
Increase your sleep time: You should sleep at least 8 hours per night. This keeps you away from food (literally), and decreases your stress levels (which makes it easier to loose fat, especially abdominal fat). In conclusion, getting enough sleep is an excellent way to control hunger effortlessly.
Relax more during the day. This decreases the blood-levels of the hormone cortisol (the stress hormone), with results as described above.
Find a new hobby that doesn't involve food. Examples: Yoga, martial arts, meditation, arts and crafts, working out at the gym, etc. Taking your mind off food and keeping it focused on something you enjoy can work wonders.
Don't forget to take a daily multivitamin supplement (especially if your diet is low in fresh fruit and vegetables). When bringing the necessary vitamins and microelements in the body, the likelihood of experiencing severe hunger decreases.
A calcium supplement may also help control hunger, particularly if your diet doesn't bring in the necessary dairy products. (Note: Calcium supplements are contraindicated in certain medical conditions, so please clear this with your doctor.)
Consider a daily omega-3 supplement: Omega-3 fatty acids have widespread beneficial effects on the body, and this includes facilitating weight loss. As such, omega-3 supplements are one of the key elements that can keep your weight control plan on track.
Tip: Fish (especially wild fish as opposed to farm-fish) contains high amounts of omega-3. Another aliment rich in omega-3 are walnuts. However, watch your serving size: 1 oz of walnuts (about 7 walnuts or 14 halves) brings in 180 calories, so try not to exceed this portion in one day.
Drink green tea -it is particularly rich in healthy antioxidants (polyphenols and catechins) which rejuvenate the body and facilitate weight loss.
Avoid restaurant food, especially fast food. It is likely to contain trans fats, which may cause renewed hunger shortly after eating. Trans fats also promote accelerated weight gain, and have somewhat of an addictive effect (give you the urge to eat more of the same). Once you stay off these foods for a while, you will then be able to detect the specific taste of trans fats with the first bite you take. It is an unmistakable oily taste, which tells you one thing: "Stay away from this food."