I want to cut off all contact with my father. how?

My dad has manipulated me for years and i have finally woken up from it. He and i live in different states but he constantly checks my phones usage and phone/messaging records. He always wants to control what i say, how i talk,who i see,what i do,and ect. He is the reason i have severe anxiety and paranoia. I have this idea of perfection because of him. He's always wanted me to be perfect. He is controlling and psychologically and emotionally abusive. When i was a kid he would not let my go to the fridge or drink anything without his permission. We had a specific rountine and if i didn't want to go through with it i would be locked in my room. I would go through the day with stealing bread from the kitchen counter and drinking from the bathroom faucet. He once slapped me for laughing and the next morning he acted as if it never happened and served me some pancakes. He decided how i felt because he knows i feel nothing like he does. We are both mentally ill people but the difference between us is that im willing to accept i am a certified sociopath. I want to cut off all contact with him. But how?