I'm going to cut contact with my family
What makes you want to cut contact with your family?
I don't want to deal with them anymore.
If there are issues between you and your family, cutting them out of your life will not solve anything.  I'm sure if you just let them know what is upsetting you, they will be willing to help find a solution.
You are right but I'm not handling it well. I want to talk and get my feelings across.
This is a much better way to handle your problems. I know its hard, but they're your family and it will all work out.