That is terribly sad. I am sorry you are made to feel this way.
Your father really is a bad parent. Anyone can father a child but not everyone can step up and be a parent. What an opportunity your dad has missed in his life to not value and respect what could be one of the most rewarding and loving relationships in his life. His bad choice has "jipped" you of in having a positive parent/dad. Now you got to stop trying to please him, impress him or show him in anyway that you are not what he thinks you are. LET HIM thinks what he wants.
I think the person who mentioned picturing a clown has the right idea. Create some method of visualizing him and capturing him that reminds you this is HIM. Nothign to do with you. Picture a clown with missing teeth and you get to honk his nose everytime he says something insulting. What was that old saying "I'm rubber and your glue, whatever you say bounces off of me and stick to you".
Healing is when you learn how to squeeze the pain out of his words and stop letting them whip you over and over.  :)o somethign the next time for YOU but do not do it to please him. Let's face it - no matter what you do you won't be good enough because clown dad has the problem.
Take care
