I am mad at my 7-year-old cousin because he got a wish from make a wish
Why would that make you hate him?
I hate it when I don't get something I want
You should be happy for him and glad something good happened for him. You shouldn't hate your family or be jealous of good things that happen to them.
I'm pissed and my cousin just got a car from the make a wish foundation.
Make a Wish is usually reserved for children who have terminal diseases. You shouldn't resent your cousin for getting something special in such an awful time in their life.