I kind of turn into another person sometimes..?

It sounds like its just the way you cope with the bad situation at home. Maybe this is what you've found works for you, probably through trial and error...do you have issues with your parents? Are they willing to talk about it if maybe you asked for some time to discuss it? If not, if they're not willing or able to open up and help you resolve it, then maybe there's someone you can talk to? A school counselor, a therapist maybe? All I know for sure is that if truly fixing the situation takes your parents making some changes and they aren't willing to then all you can do is worry about you and take care of yourself. When your at home you should keep positive people around you even if only by phone?