Parental Abuse

I am a 19-year old girl living with my parents. My parents have been mentally, emotionally, verbally and physically abusing me for years. They have resorted to everything from name-calling, insults, public humiliation, death threats, threats of calling my friends and teachers to insult me, emotional blackmail, to physical abuse such as slapping, hitting (sometimes with objects such as an iron or a knife), pulling my hair, punching, and even choking, in an attempt to make me comply with everything they say. When I tried to seek help from other family members, friends or teachers, they said that they’re only doing this because they want the best for me and are worried about my education. Every aspect of my life – my academics, social life, personal life – is suffering. All of this drove me to the verge of committing suicide twice. I want to take some legal action against them to make sure that they can’t force me or harm me in the future. Legally, what course of action should I pursue.