Always do not have enough to eat, one is earning less, reluctant to eat. I also have a big appetite. Then you should pick up cheap food. Eat steamed bread and then buy some vegetarian dishes. Buy some meat and vegetables a day. Have some more rice, and you'll be full of noodles or something. In short, don't eat expensive things. Drink a bowl of porridge or noodles at the bottom before eating. Then eat. Steamed bread dishes. You will be full.