What is definition of self disciplined?

Self discipline refers to the ability to control oneself, one's feelings, behavior, and habits, especially relating to goals and purposeful activities. It is the quality of being able to regulate oneself when necessary, either through motivation or structure, to accomplish a task or goal despite the challenges and obstacles that might come along the way. Self-discipline requires a great deal of effort, willpower, commitment, and determination. It is often considered as a crucial life skill that helps individuals to lead a successful and fulfilling life.