One of the toughest jobs on the planet is being a nurse practitioner, everyday you will be confronted with human pain and suffering but somehow have to keep your strength and the mental fortitude required to keep on going. If you break down and stop then that could... 
Going to the doctor can always be a stressful ordeal, not limited by the fact that you are in pain or ill, having to open up to someone who, in some cases, is a stranger and then trusting that they know the best way to cure your illness or alleviate your pain.... 