A General and the presumably losing army

Well, i was told a story by a friend of mine some time back and i feel that i will be using that for my life to be in future...I am not sure about you others but, i believe it goes for everyone too. The story goes..

"In one of the histories of China, there were two sides of armies. One of them was the attacker but with lesser men in it. The other was the defender who had more men, better ground advantage and what's best, they are IN the castle. The attacking side, seeing that they are greatly disadvantaged with a river to cross, high strong walls to break through and men outnumbered but 1:3, were greatly demoralized. Some of them could not even eat nor sleep properly thinking of that disadvantage and soon, it grew into fear that spread around the army like a virus.

The general of the army saw this..and gathered all his men the night before the attack. With all his men lined up in formation and all waiting for the general to speak, mostly quivered and expected the worst. Then the general spoke with a strong clear voice:

"Forget the food that you're holding at your hand, you know that's crap! Forget the tents that you build for you know they are leaking and still makes you cold in the night! Forget the clothes you're wearing, for they will not protect nor keep you warm also!..Tomorrow, we will attack them! And we will win! And we will eat their best food, live in their big castle and also wear their best clothes! Don't fix your mind on what you currently have and use that to live for that will wear down or deplete and you will die a more torturous death than the enemies sword! We will attack them and we will win!"

His armies roared and it was so loud, it kept their enemies shaking even inside the castle..The next morning, they crossed that big river, attacked and they won....

I knew what my friend wanted to tell me right away....

Moral of the story/what my friend meant was:
"forget the thought of what you have, salary (for we all know it's never enough), places we stay (rented rooms, small apartments...sounds familiar?) or clothes/lifestyles that we have now..for we all know that will wear out...do something that you really want and put your head up high for that...even if the odds are greatly against you.."