Discipline is the very basis of human progress. Without it nothing can be made or properly maintained. Indiscipline causes all sorts of harms. The temporary pleasure it gives is not the genuine pleasure of freedom.
To be disciplined is to submit to a good rule or system, to maintain certain restraints for ultimate general good. If discipline is violated, steps must be taken against the offender.
Discipline is necessary in all spheres of life. An army cannot fight without strict discipline. An educational institution cannot run without discipline. Teachers and student must come to the school at a fixed hour every day, and observe the rules of the institution. Courts, offices, auditoriums, and even private houses have to maintain discipline. One cannot go into a hospital at hours when visitors are not allowed. One has to stand in a queue to pay bills for electricity or telephone, or for buying tickets for cinema or train journey.
In personal life, too, one has to practice discipline for a stable and worthy life. If you give in to temptations and overeat yourself, the stomach will revolt. If you watch TV throughout the night, you will get sick the next day. If you do not restrain yourself from music and story-books before the examinations, you are sure to fare ill.
In fact, life is best enjoyed only if discipline is maintained. Nothing can be properly enjoyed, not even a game of cricket or a musical concert, if indiscipline is allowed to invade it. We should all try to maintain discipline in our lives.