How to get my parents to listen to me? Sorry it's long!?

"the sociopath next door" by Martha Stout. "The how to handle Difficult People Handbook", by Murray Oxman. Good reading material that may give you some focus about your cirstance. Your sister seems very good at manipulating her life style choices to self satisfaction, hurting you and turning your parents against you. Seeing how this is affecting you emotionally is satisfying to her. As difficult as it is, you must focus on separating your emotional self from your peaceful self. Why ? Probably because you have no choice. Only you should control your emotions. Not sis or your parents or the cirstances around you. It is difficult, but, with some learned books and meditation, it is possible. Good luck. Life can be good, but, sometimes we must learn to control ourselves and not let others control us.