Hey hun,
I'm glad you didn't cut yourself even though things were tough, that's very strong of you =) Stopping cutting cna be really difficult because it's a coping mechanism we use to deal with our negative feelings and the like, but it's only short term and doesn't solve and of the issues you're facing.
If you want to stop cutting, a good step is to have some sort of support. Are you speaking to a counsellor or a professional like that .. or making an appointment to speak with your doctor.
It might be a good idea to read
Stop trying to not self harm - and start not needing to.
What is it about your family life that is so difficult? You're welcome to elaborate on that, see if we can offer any advice. In the mean time you've got to stay strong and remember that self harm won't solve your problems and will only make things worse in the long term, so please try & keep yourself safe, and keep posting.
Welcome to RYL =)
xoxoxo
Aimee