Self-discipline may not make you money, but it will definitely make you earn - no regrets. Self-discipline is to converge random events that may occur into a relatively certain event. When faced with a possible event, you will do this and can only do this, and you will lose the possibility of doing whatever you want. When people have choices, they are particularly likely to regret when they make mistakes, but when there is no choice, there will be no chance to regret, and there will be no thought of regret.
