My mom hates me.

so, today, I was really excited for a game update, and I got on, I was t really happy, and all of a sudden my mom lashes out. She asked me why I am so lazy, and useless, and how our dad was dead so I had to work harder. I was really sad and hurt. I went to bed and she said:"lights out. I'm not wasting electricity on losers." The REALLY upset me and hurt my feelings. I feel like she doesn't care, and not talking about my little sisters. They GWT everything they could ever want, act innocent, and I swear, have only gotten yelled at 5 times in their perfect little lifes. My mom OBVIOUSLY picks favorites. I have really bad depression, and get anxiety attacks. My mom called me pathetic during one once. Does anyone have any advice to help me feel a bit better around my mom?