Should I just tell people to think properly
What do you mean by think properly?
I think you should take your head out of your ass.
Telling people to think properly makes it appear that you feel everyone should view the world, situations, and life the way that you do. There is in fact no proper way of thinking since everyone has a different upbringing and different cultural inflences. Saying this to people will only make it appear that you are the one is should think properly.
Everybody is wrong and I'm the only one who is right.
Imagine that the opposite were actually true. Wouldn't you want to know that you were wrong, so you didn't make a fool of yourself? Consider listening to the opinions of other people, so that you can learn from them.