Impossibility is only an opinion, not a destination.
To those of us with a "Belief-In-Self", we see the world as what could be rather than what is. We have an unwavering faith in tomorrow. We do not see the limits others see, we do not see the many obstacles in our path. What we see is the goal, and when we keep our eyes on that goal we cannot focus on anything else which may be in our way. Impossibility is an opinion reached when you run out of faith.
With enough faith anything is possible.