Hallo,
It seems that you want to lose weight while being a completely healthy person and not wanting to exercise or be on a diet.
Usually revising everyday habits and changing them a bit might be very helpful. Eating between meals is not always associated with hunger. Try to keep yourself from eating half an hour after you feel hunger for the first time.
The second rule is that you eat only when you are hungry. If you are not hungry, do not eat at that moment.
Next, even when you are very hungry, try to eat slow and to eat the same amount (not more) that you need each time. Eating slowly allows the food to start digesting. If you cannot be that slow, then you might use the following trick. Try to stop eating and leave the table in the middle of the meal when you still feel hungry. If you feel hungry fifteen minutes later, then take a few more bites. If you do not, then you just saved your body from extra calories.
Avoid fried food, pasta and soft drinks that usually contain big amounts of carbohydrates and fats. Instead, try to take more fruits and vegetables. Drinking a lot of water might fill your stomach and ease the hunger.
You might want to visit a dietitian or your general practitioner to check whether there are any health issues that are not compatible with your diet.