You could miss out on essential nutrients and you may end up snacking more throughout the day because you feel hungry.
Try to plan your breakfast, lunch, dinner and snacks for the week, making sure you stick to your calorie allowance.
Instead, opt for healthy snacks, such as fruit, unsalted rice cakes, oat cakes, unsalted or unsweetened popcorn, and fruit juice.
There's no reason you cannot enjoy the occasional treat as long as you stay within your daily calorie allowance.
Using smaller plates can help you eat smaller portions. By using smaller plates and bowls, you may be able to gradually get used to eating smaller portions without going hungry.
Fibre is only found in food from plants, such as fruit and veg, oats, wholegrain bread, brown rice and pasta, and beans, peas and lentils.
Fruit and veg are low in calories and fat, and high in fibre – 3 essential ingredients for successful weight loss.