Thus one’s victories in battle cannot be repeated—they take their form in response to inexhaustibly changing circumstances.
—Sun Tzu
What limits individuals as well as nations is the inability to confront reality, to see things for what they are. As we grow older, we become more rooted in the past. Habit takes over. Something that has worked for us before becomes a doctrine, a shell to protect us from reality. Repetition replaces creativity. We rarely realize we’re doing this, because it is almost impossible for us to see it happening in our own minds. Then, suddenly, a young Napoleon crosses our path, a person who does not respect tradition, who fights in a new way. Only then do we see that our ways of thinking and responding have fallen behind the times. Never take it for granted that your past successes will continue in the future. Actually, your past successes are your biggest obstacle: every battle, every war, is different, and you cannot assume that what worked before will work today.
Daily Law: Think of the mind as a river: the faster it flows, the better it keeps up with the present and responds to change. Obsessional thoughts and past experiences (whether traumas or successes) are like boulders or mud in this river.
The 33 Strategies of War
, Strategy 2: Do Not Fight the Last War—The Guerrilla-War-of-the-Mind Strategy