You may need to get your parents on board because of your age. Will either one read Primal Blueprint or the primer from the website? How about making a deal with your parents. Acknowledge to them that what you're doing now isn't working. Ask them if they will let you try Primal for a set period of time - 2 weeks, 1 month? If you attack it from being on their side and show them your frustration with the current situation, it may be easier to get them to work with you.