Daily Update / Socrates said: "Know thyself!"

Sun Tzu said: "Know yourself and know your enemy."

In my years of investing, I've realized the most important thing is: focus on yourself. Focus on your character, cognition, and ability to act; in most cases, whether a person can succeed is unrelated to others. When you can sufficiently understand yourself, you are already in a winning position before you decide to do many things.