See reality clearly, and know yourself. Stand by your principles: do what you can, and don't do what you can't. Don't be greedy or fearful; don't rush or fret. With principles, you know what you should and shouldn't do, and can remain at peace. Without them, you'll be swayed every day by indices, news, price fluctuations, and other people. When investors have principles of their own and strong self-discipline, they can ignore market fluctuations. Most people are swept along by the market and the flow of information.