First of all. When eating at noon, drink a glass of water first, and then chew slowly. The slower you eat, the easier it is to get full.
Second. When eating, don't eat, eat cucumbers. If you feel that cucumbers are not full, you can eat whole wheat bread first, but you should also chew slowly. Never eat after 8 o'clock. If you are hungry a few hours after dinner, drink water and boiled water.
Third. Choose a sport, 2 hours in the morning and 2 hours in the afternoon.