Heroes rarley can do things alone, therefore most of the would be heroes are no more than day-dreamers. To become a hero to have to posess, in additon to passion, a will to reach out to others to get their help. Heroes need help, and these are those helpers that later sing the hero stories. Without a true passion a would-be hero will never lighten up a fire in the hearts of helpers. Passion is a currency of a hero.
Who are the helpers? They are people that unlock the closed doors, people with particular skills or means that the hero does not posses. They are lending their help for hero to navigate thru the labirynth of challenges and without their help the hero would be just a powerless day-dreamer.
Do heros know how they will achieve the sucess? Never! If they did they would be not heroes, they would be accountants and factory workers with predictable inputs and outputs. You cannot map out a path to be a hero, because that path has not be travelled before. So how would a person convince others to help without knowing how that will be accomplished? With passion.
Hero will travel the labirynth of challenges, invariably will take many wrong turns and learn from mistakes, but eventually will come out sucessful with his passion and help of powerful friends.
Will the perspective from the destination be same as the one at the start? Never! This is really what makes a hero, the journey and the help from friends. The destination is hardly ever the same as the goals set at the beginning.
How do you know that you will suceed without knowing the precise way to reach the goal? The same way as you would ask yourself a question: "Do I know when and how I will die?" No. "Do I know I will die?" Yes, if I live long enough.