“Resentment, hate, grudge, ill will, jealous, and vindictiveness, are attitudes which produce ill-health.”
Chemical reactions in your body are set up by emotional outbursts that result in the feeling of ill-health - the sinking feeling in the pit of your stomach when you have a fit of anger is a good example of this. Over the long-term, your ill-health could become a serious problem. When you direct your energy towards feeling these negative emotions, you do not have enough energy to overcome your physical illnesses and they will begin to affect you.
Counteract the emotion of anger.