Just an advice....having it in the house it's a huge temptation..maybe talking to your folks and saying it's very hard for you, would take away a bit of the cravings...i know you maybe don't want to..but it's really hard for you to have that kind of temptation that close, it can eat a person away....
please stay strong, you're so worth it.you have a whole life in front of you!why not start right away?
take care