All the expanse of discipline is built upon the foundation of the goal. The goal comes first.
I might be a very violent man, and my goal is to blast a building off. To learn how to do it, I will have to live through stern discipline. I will have to build my body; I will have to learn several skills; I may have to have the discipline to learn a new language if the building is in a foreign country; I will need to learn the skill of dodging officials and police; I need training and firearms, and all of that will require discipline. And all that discipline may ultimately train me to be successful to achieve my goal. But what is the goal? The goal is violence.