Young woman, a fellow curly alerted me to your post. Not that it matters, but I am a licensed professional counselor. This is a BOUNDARIES issue. Your father has NO right to be telling you to straighten your hair. I could understand his objection if you had a Mohawk and you were applying for jobs in corporations. Others may disagree with me, but sooner or later you will need to learn to stand up for yourself, and it may as well be now. Tell him that if you go against your principles of being true to yourself, you will not like or respect yourself, and as such, he should respect you enough to back off. It is YOUR hair.