How can individual beliefs about illness affect health and treatment? critically discuss

the essay is for my chiropactic degree. the essay should have some relevance thrown in to chiropractic treatment and maybe the health belief model as we have covered this. the subject is psychosocial, so is a bit of both i suppose. i am away between 15th and 22nd of feb but around until then and dont need it for 3 weeks. the tutor is pretty hot on referencing throughout and we believe that it is more important to her than the actual content of the essay!