The most classic self-discipline quotes:

1. If you can’t restrain yourself in small things, you will probably not restrain yourself in big things. ——Warren Buffett

2. True freedom is to be able to control yourself at all times. ——Montaigne

3. We all have to suffer one of two kinds of pain: the pain of discipline or the pain of regret. The difference is that discipline feels like it weighs ounces and regret feels like tons. ——Jim Rohn

4. No matter how you express your anger, don't do anything irreparable. ——Bacon

5. You must control your emotions, otherwise your emotions will control you. ——Alexander Dumas

6. Even a little restraint on oneself can make people stronger. ——Gorky

7. If you don’t work hard, your heart will become depressed; if you don’t exercise restraint, your heart will become unbridled. ——Zhu Xi

8. Conquering all one's weaknesses is the beginning of one's greatness.

——Shen Congwen