I'm not going to respond to my best friends messages for about two weeks
Why is ignoring him a good idea?
Every time we hang out we keep arguing over the same things
I can understand needing some alone time, but you shouldn't just straight up ignore your friend.  If you guys are fighting so much, why don't you talk it over and try and resolve whatever issue it is you keep fighting about?
I don't need to talk to you about this, go fix your life.
I am just trying to help you out. You will get further by talking out your problems instead of ignoring your friends.