Discover the life-changing power of self-discipline.
Every year hundreds of young recruits join the US Marine Corps.
When they arrive for basic training, they are soft, unfit, and mentally weak.
The recruit will have no idea what real discipline means.
Up to that point, he has lived a life of weakness.
He has given into all his natural impulses and has feasted on junk food, surfed the Internet, and generally lived far under his potential.
Very soon, he will be th.