Ok I'll pick up that ball and run with it. Someone once said "perception is reality"
Sure there are limits to that, but my point is that if you lived inside a virtual reality tank which was completely convincing to the point where you couldn't see the "joins" you would in effect experience that artificial and individual state as real and from your point of view there would be no difference from what I might, for want of a better description, describe as consensual shared reality.
We all live inside our own heads to an extent. I percieve and understand you, I interact with you through the organ which is my brain. The physical part of me you see... but if you have ever seen a corpse you will know that while physical attributes on their own may make an anatomically accurate effigy they do not constitute a person. That ineffable thing which is personality and spirit makes all the difference, and that is something which we make for ourselves. Sure other people help us to fashion our persona, but fundamentally it is something which springs spontaneously from within us.
False evidence... the trouble is if you read the likes of Godel, and his theorem of incompleteness, which states that to be provable a theorem must, of necessity always be incomplete, you might conclude that whether a thing is true or false is in iteself often highly subjective. It's a kind of philosphical equivalent of the Hiesenberg uncertainty principle leading to the conclusion falsehood is pretty much a given in this world. Nothing is ever entirely true or false because if it was it would not be provable.
So ultimately I think the difference between falsehood and reality is often merely one of perception, and as for fear that too can often be an illusion conjured from within us by our unhealthy beliefs. Such monsters from the ID can indeed be conquered if you are prepared to stand up to them.
Someone else, also very wise, once said "Then you will know the truth and the truth shall set you free"
Down the years, and to my immense irritation, that wonderful saying has been misappropriated by those who wish to use it not to set people free but instead to bind them into a sort of numb conformity in which, just because something works and is true for them, they expect everyone else to do and be exactly the same thing.
But applied in Godel's reality the saying goes much deeper than that. If truth and falsehood are in part generated from within us the saying is really urging us to reach within to uncover our truest and noblest selves and thus be free to be whoever we really decide that we are.