Discipline

Discipline is action or inaction that is regulated to be in accordance (or to achieve accord) with a particular system of governance. Discipline is commonly applied to regulating human and animal behavior to its society or environment it belongs. In the academic and professional worlds a discipline is a specific branch of knowledge, learning, or practice. Discipline can be a set of expectations that are required by any governing entity including the self, groups, classes, fields, industries, or societies.
Use of the word discipline.
Children being educated to use public litter bins is a form of disciplinary education that is expected by some societies. Discipline is followed in every school. If a child cannot use a litter bin the lack of discipline can result in a reaction from observant people in public. Many people observe a form of disciplinary effort in their daily lives. Discipline acts as an important role in students' campus life to enhance their credit and intellectual recognition amongst peers. In academia, discipline can also regard the educators' responses and efforts that are designed to punish the student(s).
Discipline is a moral obligation among many groups of people. Disciplined behavior is required by some laws and other legal obligations. Commercial entities can also put in place strict disciplinary requirements for the length of the commercial agreement. Airlines enforce strict disciplinary and conduct rules upon flight passengers.
History.
Disciplinarians have been involved in many societies throughout history. The Victorian era resulted in the popular use of disciplinarian governance over children. Edward VIII had a disciplinarian father, and the English had modeled the royal families during this era. Edward's grandmother was Queen Victoria who had championed the role of the family unit during her reign. A disciplinarian will enforce a stricter set of rules that are aimed at developing children according to theories of order and discipline. Disciplinarians have also been linked to child abuse in numerous cases and biographies. 
Self-discipline.
Self-discipline is about creating new habits of thought, action, and speech toward improving oneself and reaching institutional goals. This is an alternative to viewing discipline as a means to obtain more information.
In religion.
Self-discipline is an important principle in several religious systems. For example, in Buddhist ethics as outlines in the Noble Eightfold Path, the element of commitment to harmony and self-restraint has been described as a moral discipline.
In Christian ethics, virtues directed by the beatitudes were formally replaced by ascetical theology and obedience-based discipline, which changed orientation from the Gifts of the Holy Spirit to that of an authority, blessed but not possessing the same happiness which was given forth by adherence and observances. In the Medieval period, spirituality and morality were closely connected and even thought of as being practically the same. The beatitudes were made an organizational principle since Saint Augustine. However, Christian ethics didn't have its existence as a form of discipline until the late, middle Medieval period, and along with Lutheranism and post-Enlightenment obedience-based discipline has been the new form.
Alexander Maclaren suggested the duty and discipline of grace and the hope born of and carried throughout life can be described as follows:
'grace' means the sum of the felicities [happiness] of a future life. That is clear from two considerations — that this grace is the object of our hope all through life, which only an object beyond the grave can be, and also that its advent is contemporaneous with the revelation of Jesus Christ. The expression, though unusual, is valuable because it brings out two things. It reminds us that whatever of blessedness we may possess in the future it is all a gratuitous, unmerited gift of that loving God to whom we owe everything."
Self-discipline is how our self-control is gained, and the way our hope is maintained. "Hope follows desire. The vigor of our hopes is affected by the warmth of our desires. The warmth of our desires towards the future depends largely on the turning away of our desires from the present.