There was once a man and that man had a dream and throughout his live he continued to work hard towards it. At first it seemed hopeless but after many years, when his hair already turned grey, he finally achieved it.
His dream was a creation of a different world, the world in which everything was possible and yet at the same time achieving anything meaningful would require incredible effort.
This world was given to others. Those that went there probably dreamed of slaying dragons and taking part in the great battles that would decide fates of kingdoms. They dreamed of becoming the greatest heroes or the most vicious villains. Still, soon enough those people realized that in this world even slaying a single boar could make them incredibly happy and that was because it was a reward of a true hard work.
While some people could do better than others, regardless of one's talents, there was always someone above who would laugh at them for their weakness. There was nothing that could prepare one before entering this world and those who decided to so, were changed forever, even if they didn't realizing it themselves.