Discipline refers to systematic instruction or training to follow rules of conduct. It involves acting in an orderly manner with attention to detail out of respect for oneself and others. Self-discipline requires correcting oneself for improvement. Discipline is important for individuals, organizations, and society. It is needed everywhere from sports to the military. Without discipline, there can be no orderly existence. Disciplined people and nations like Japan that were devastated in war were able to achieve great progress through the discipline and sense of responsibility of their people. Discipline guarantees success while indiscipline leads to chaos.