There is nothing more dangerous than the (self) feedback, if you think you are green and some few people around you tell you: "yes you are green", do not matter how many pictures or mirrors show you what you are orange, for your mind the green will be there.
And then, you will stop listening to anybody who tell you you are orange, that's called confirmation bias so you only hear that you want to hear and for your mind EVERYONE start to tell you that you want you hear, no because is true, instead because you ONLY hear who is agreeing with you.
Can you see the vicious circle? Can you see how dangerous is that?