Self-discipline is the ability to control one's behavior, thoughts, and actions to achieve a desired outcome. Some synonyms for self-discipline include self-control, willpower, restraint, self-restraint, self-mastery, self-command, self-possession, self-restraint, self-government, and self-regulation. These words describe the attitude of someone who is in control of their own decisions and is aware of the consequences of their actions. Developing good self-discipline can be challenging, but it is worth the effort because it can lead to greater success in life. With regular exercise of self-discipline, it becomes easier to achieve goals, manage time, and make better decisions.