Define discipline to me?

Here interviewer is trying to find out that how much you are disciplined in your personal or professional life and how you apply it at your workplace. As u know you discipline is very important in the workplace. Discipline in the college means by which supervisory personnel correct behavioral deficiencies and ensure adherence to established college rules.
Example Answer: Discipline is a concerted,  focused effort,  often involving personal sacrifice,  dedication of resources and risk,  which is directed toward the accomplishment of a particular goal.