Soy products, lean meat and fish are good protein sources. Eat lots of vegetables. Carbohydrates help us to manufacture serotonin. This chemical is important to the regulation of our moods. Gradually cut out coffee or at least reduce it as much as possible over a period of a week or so to prevent severe withdrawal.
Coffee makes many people jumpy and unable to sleep properly.
Drink a lot of water. Water assists the body in eliminating biochemical waste. Exercise releases endorphins, natural morphine like chemicals that make us feel calm and contented. Exercise increases self-esteem, lowers body weight and assists the body to function properly. Learn how to meditate or some form of deep relaxation.