my sister annoys me alot so i yell at her and she cries and i get in trouble what should i do?

Do not yell at her try to help her

Love is the answer.
Remind yourself that you love your sister; she is not your adversary, she will always be family.

Friends may come and go but you sister will always be your sister, there is no changing that. What you can change is your mind, decide that you want your sister on your side, do not push her away but make her part of your team.

Talk to your mom when she does something that annoys you instead of yelling at her. Sister's can be annoying but their great to have!

Treat her like a well respected FRIEND. It's too bad that your parents FAILED to teach both of you to be loving, respectful friends from day one.