"Anything is possible"
Litterally, this statement, quite litterally is true.
Let me point it out, first you have to question - what is reality?
Well reality, is what you believe is around you, your perception of your surroundings.
So If you believe anything is possible, and you believe that you somehow can fly, no matter what anyone else tells you, then in your reality, you can fly? There isn't anything to prove that you can't fly in your reality...