As others have said it's mostly a dietary change. One must especially avoid the insulin peaks of eating sugary foods, and processed grains and flours. because insulin triggers fat cells to take sugar out of the bloodstream and store it.
Here's some suggestions:
no white bread, no sugar, keep your carbs complex, go through periodic high protein diets ( although make sure they are periodic, because high protein diets are somewhat toxic to the liver and kidneys, and make you lose calcium from your bones, so take calcium suppliments and drink plenty of water, and pay attention to your body)
eat breakfast. not too much.
eat slowly and chew your food.
eat small meals, frequently.
don't eat last 3-4 hours before bedtime.
in each meal, fill up on leafy vegetables and non-starchy ones. avoid anything deep-fried (trans fats), especially starches. avoid eating foods with a high-glycemic index (white bread, white rice,potatoes), stick to whole foods as much as possible. try to make 50% of your meal, high water content, fresh vegetables, raw or steamed, or lightly stirfried.
fruit ,while high in sugar is very beneficial for your system, and satisfies sugar cravings. in fact after a couple of weeks of no sugar, most fruit seems incredibly sweet.don't avoid fruit, eat it at room temperature.
Eat coconut oil and olive oil. eat sparingly, but do have some fats. the body needs them to produce hormones. if you deep fry anything, use coconut, or clarified butter. do NOT use canola,corn, soy, or any vegetable oil.
once a week, break the pattern, have an ice-cream, or eat a piece a of cheesecake, to confuse your body a bit, but also to avoid any feeling of deprivation.
Spices are helpful too, warming spices, and heating spices, cumin, cinnamon,fennel,corriander, cloves, garlic, ginger, cayene pepper, black pepper...these can stimulate your metbolism...be aware of your system. In Ayurvedic medicine, rapid weight loss, often leads to overheating according to their system of energetics... if you notice your body heating up too much, lay off the spices, take aloe, eat raw foods, and milk,
do plenty of cardio, 20 minutes a day, high intensity, 5-6x a week. get that heart up around 150+ intensity wins over duration, slow "fat-zone" cardio is not for weight loss, but for athletes who wish to train for long distances.
ask your body for permission to lose the belly. Are there psychological reasons? does your body feel like it needs to protect itself? will the missing padding alarm you body on an unconscious level.