I'm 19yrs old my partner is 22, we've been together for about 1yr and a half and it's been an up and down ride

Several times I've tried to leave him, each time I've always come running back cause he said he'll change etc. however he has change in ways but his emotional abusive side has never left. His family is aware of his actions and words and tell me to leave and don't stay for my own wellbeing however it's not easy and he doesn't make it easy to do so. For e.g. When I've tried to leave in my car he threatened to take my side mirror out and smash my windscreen. I was sitting inside the car and he had his hands on my windscreen.

- he gets angry, upset real easily (short tempered)

- when we fight he says very hurtful things, name calling and criticises me

- puts me down

- acts intimidating to the point where he'll block the doorway and won't let me leave or get pass

- he'll throw shit and grab bags out of my hands and throw them across the room

- he uses his jealousy to justify his actions

- again smashes, hits, kicks throw objects

- he is very jealous and overprotective

- sometimes he will tease me or use sarcasm as a sense of "joking around" I'll get offended and he'll say I'm a sook or I need to grow up it's only a joke

- always make me feel like my opinions and feelings are wrong, he's stubborn in a way that he's always right

- he treats me like a child, his the only person whose ever told me that I am childish and immature

- I feel as though I need permission or acceptance to make plans or see certain friends

- he has an opinion on all my friends

- he always in arguments and fights remind me of my shortcomings to make me feel guilty and bad

I know what I need to do I just don't know how to go about it I'm honestly at breaking point, that I want to drive my car off the road just to get away from him and the dramas that come with it.