No matter what you believe, it doesn't change the facts. If we all worked on the assumption that what is accepted as true is really true, there would be little hope of advancement in the world. The facts do not cease to exist because you ignore them. If fifty-million people say a foolish thing, it is still a foolish thing.
Successful people are realistic.
They are not trapped by false appearances. They see the world as it is. The truth is what it is. It is neither good nor bad. It is reality.