I'm a junior in highschool. My parents have been divorced for around five years.
Just a little background information.

My older brother is five years older than me. He is the source of the problem. I don't know know how to deal with him anymore. He tries to act as if he is my father, and I am honestly tired with it. Whatever I do, good or bad, he criticizes it. Whenever i do what he asks, i do and yet, he always tries to undermine everything i do. It really pisses me off.

I might be just a brat, i can take it if it is the case. But i just felt the need to vent.

What to do?