The Purpose of Discipline
You could wander with no purpose.
You could have no friends or family.
You could have no society, culture,or anything.
You could exist in a state of chaos with no reason for your existence.
If you choose to have purpose, and all the friendly facts of the universe that go along with such a choice, you must establish a discipline.
A discipline is a structure you use to deal with the universe. It is the method you use to evolve yourself as a being.
A person without a discipline is not evolving, and is the effect of the universe.
A person with a discipline is evolving, is growing beyond himself, is establishing himself as the cause for the motion of the universe.
In the martial arts that discipline is called Matrixing.