The problem we all face in strategy, and in life, is that each of us is unique and has a unique personality. Our circumstances are also unique; no situation ever really repeats itself. But most often we are barely aware of what makes us different – in other words, of who we really are. Our ideas come from books, teachers, all kinds of unseen influence. We respond to events routinely and mechanically instead of trying to understand their differences. In our dealings with other people, too, we are easily infected by their tempo and mood. All this creates a kind of fog. We fail to see events for what they are; we do not know ourselves.
Your task as a strategist is simple: to see the differences between yourself and other people, to understand yourself, your side, and the enemy as well as you can, to get more perspective on events, to know things for what they are.
Robert Greene, The 33 Strategies of War