Greetings @rbalzan, self-discipline is a tool that human beings have at their disposal to achieve many things in life, when you propose something as a goal and want to achieve it you must make sacrifices that for people are in some cases are difficult to perform is where self-discipline plays a key role because if you do not have it just do not achieve what you want, before ending I want to ask a question. ¿will be that self-discipline will have something to do with self-esteem of people?.
Very good article.