When should you cut off your family?

Sorry I didn't read it all but I got the gist of it. Bottom line, if there is anyone at all who makes your life miserable, pulls you down, makes you less of a person, makes you hate who you are, continually finds fault with you, cut them off. I have an aunt and cousin who like to pick at stuff continuously. They can't pick at me because I shut them down. Stop apologizing for your stupid aunt. Live your life. Apart from them. Good luck.