You are taking a huge step. Not just in the act itself of striking off on your own. But, in doing something so specifically for yourself, for the benefit of yourself, and no one else. That is a tremendous thing to do.
I wish you the best in your new life away from the toxicity of your family. You are in my thoughts. Write anytime you need to talk if the road gets dark. We are all here to support you.
I'm rooting for you as you step into your own life, my friend.
"Great spirits have often encountered violent opposition from weak minds."