Discipline, Discipline

As a concrete noun, the discipline refers to an instrument of punishment, for example in mortification of the flesh (see also: flagellation). Such an instrument may also be applied to oneself, for example in penitence for not being sufficiently self-disciplined.

Self-discipline is to some extent a substitute for motivation, when one uses reason to determine a best course of action that opposes one's desires.

For this reason the usage of school discipline sometimes means the administration of punishment, rather than behaving within the school rules.

Source: Wikipedia > Discipline