First, let's deal with the meaning of the term discipline. Dictionaries give the following definitions:
- obligatory for all members of a collective to obey a firmly established order;
- a set of firmly established rules to which a certain group of people bound by common duties must unconditionally obey;
- restraint, the habit of strict order.
Self-discipline is important on the road to success. These are the rules that you set for yourself and which you follow. But rules alone will not lead to your big goal. You need to make a plan and work daily to realize it. This is where discipline plays a key role. If you don't do something important every day, you will never achieve what you want. Many people are dreamers: they read smart books, go to different trainings, but do nothing to realize their great ideas. Achievement in life is a combination of two skills: setting goals and discipline.