One man found an eagle egg, and put his chicken.

Eaglet grew up with chickens and became like them: he cackled as they dug into the ground in search of worms, flapped their wings and tried to fly.

Years passed. I have already raised the eagle in the sky saw the proud bird.

With extraordinary grace she overcame wind, only occasionally waving large wings.

Enchanted, the eagle said:
 - Who's that?
 - This is an eagle, the king of all birds - a neighbor told him. - He belongs to the sky. And we, chickens, belongs to the earth.
So the eagle lived and died like a chicken like chicken, because he believed in his chicken origin.

Your environment affects you, whether you like it or not, remember this, and that the limiting beliefs that environment are not a measure of your ability.