How should I deal with resentment and rage towards my parents?

Number one, anytime you're angry, remember anger is from shaitan. That's what the Prophet ﷺ told us in Sahih Bukhari. Number two, particularly with your parents, always remember, any difficult situation you're going through, any anger you're feeling, rage you're feeling towards somebody else, remember the Prophet ﷺ said, وَاغْفِرُوا يَغْفِرُوا اللَّهُ لَكُمْ Forgive others and Allah will forgive you. And that's the most important aspect. There is nothing that is more important than the forgiveness of Allah in this life and the next. Have that as a priority at the beginning of your mind, that you are doing this, so Allah will forgive you and inshallah that will help soften your heart.