If you want to heal naturally, you need to eat foods that improve your health. For example, if you have depression, you will have to eat foods that can alleviate your depression symptoms. When you have depression, you are lonely and sad, therefore, you need to eat foods that help in serotonin production. Serotonin is a happy hormone that can alleviate depression symptoms. You can try eating chicken and turkey. You also need to eat foods rich in B vitamins that improve cognitive functions.