Dieting doesn't work. Calorie restrictions don't work.
The only thing that works is to control you body's response to hunger. Once you break this you stop wanting to eat.
Your body can't tell you what's on a packet, it doesn't know if you've eaten a doughnut or a portion of rice. It process all food in exactly the same way. It's what you put in that determines your body's response.
If you eat sugar in the form of fruit (banana and other very sweet fruits), refined grains, pasta, bread, potatoes, corn, sugar, syrups, any of these. The body releases insulin in huge volumes to protect itself. This results in the starch being converted into fat and stored.
Then, once the large amounts of insulin have been deployed to do their job and protect you from damage the sugar in the blood plummets. This signals the hunger hormone because your body now thinks you need to eat again to raise blood sugar..... and the fight goes on.
Once you learn what your body can tolerate, you break this cycle, your body can process what you eat without having to release huge amounts of insulin and you'll not get hungry, the weight really does fall off.
The best way to do this is to buy a glucose monitor. Test before you eat, test two hours later.
If the second number is much higher than the first you've probably eaten too much sugar.
If the second number is much lower than the first you've eaten too much sugar and had a huge insulin response meaning you'll be hungry in an hour.
The numbers need to be the same before eating and after two hours.
It's easy to establish what your body can digest safely and then you can pretty much eat what you like from this personalised list.
I can't eat carrots, but I can eat a very small amount of flour. I can't eat rice, orange juice, potatoes or pizza but I can enjoy celeriac, cauliflower rice, nuts, berries and Christmas cake without the icing or marzipan. I lost 55lbs in 6 months without trying using this method. It's not a diet. It's a way of working out your own personal eating.
It's how diabetics control their blood sugar with or without meds, side affect is weight loss.