What I am about to say is my own thoughts and I do understand where you are coming from, your dad wants what is best for you and for you to live a good life but at the same time he is trying to control your life. If you are that unhappy with your relationship then I think that you should sit down and write him a letter and tell him just how you feel exactly. the first thing you need to say in your letter is that you love him and that you forgive him and then tell him what you are forgiving him for. DO NOT BE GENERAL be straight to the point. 

God be with you,   think this thru before you write