What do you do?

If someone seems abit 'off' with you, how do you act? Do you get suddenly paranoid that you're the problem? Or do you confront it and try and see what the problem is about? Or leave it and hope it blows over?
Everyone is different and everyone will react to the same situation in a different way. So why are we all so judgemental of one another? Is it because really in reality we are all narrow-minded and like things to be done how we want it to be? Anyone who doesn't agree or has something else to say are naturally against us?
I know what kind of person I am, do you? I try my best to allow people to have their view, do you? I try to be understanding of others needs, do you? I try and be as open minded as possible, do you? I try to accept people for who they are, do you?.. It's important to be reminded of this every nown and then, simply because we all automatically judge and sometimes need to refresh our knowledge of human kind - we are all different and will like different things, and it is ok for someone to express their view, so remember that, next time before feeling threatened.