There is increasing evidence health is linked personality . However , until now , the relationship has affected the way health care is delivered . There several reasons for this . Some health workers doubt whether there is a direct link between health personality or whether it ? s just a coincidence . Some feel it is their professional duty to treat all patients in the same way . Others argue that delivering health services according patients ? personalities will have minimal impact and therefore isn ? t worth the effort . However , some psychologists believe applying different procedures to people with different personalities could have a significant , positive effect health .