Siblings and Family

Me and my sister have been having a lot of arguments lately and they always result in me yelling at her only to receive yet another lecture about needing to "take it easy" and "control my emotions" from my parents while she gets off totally Scott-free. I understand where they are coming from, but I just can't keep it in! Sis constantly says I have anger issues and I'm starting to wonder if something is wrong with me. Is there?