Hm. Maybe try eating citrus fruits, pears, and berries. For other foods, try to include eggs, beans, beef and poultry. For other ways to cope, I suggest to take an ice cube and rub it across the same spot you hurt yourself. It will give you the same feeling, but take out the physical pain. Or take what makes you angry, sad, or mad on a piece of paper and crumple it up and throw it away or burn it. And what kind of art do you do?