I blame my brother's illness for my need for attention.
Why do you blame your brother's illness for you needing attention?
Ever since he's been sick my family only thinks about him.
It's wrong of you to blame your brother for these feelings of yours. He didn't get sick on purpose.
I wish my brother never got sick so that my family could pay attention to me.
I can understand how you might feel neglected growing up, but you have to rise above it. You're an  adult now, and you have to take responsibility for yourself.