Enjoy your food. Enjoy your companion's food. Really taste your food. It may take several portions to accomplish this, especially if subtly seasoned. Really feel your food.
Texture is important.
Compare, for example, the texture of a turnip to that of a brownie. Never eat between snacks, unless it's a meal. Don't feel you must finish everything on your plate. You can always eat it later. Avoid any wine with a childproof cap.