Don't Rub Your Eyes. Not only should you avoid rubbing the eye area for reasons of a foreign object in your eye, you should never rub your eyes, period. If there's a foreign object in there, flush with water and pat dry with a towel. Don't rub! It will scratch the delicate surface of your eye.
Don't rub your eyes when you are tired because you will stretch the skin around your eye area and this leads to wrinkles. It's best to refresh your tired eyes by misting or splashing some cool water on your face and then gently pat dry with a towel. Or you can use eye drops. If you wear contacts, make sure you use the drops that are especially for contact lens wearers.