Engage people with what they expect; it is what they are able to discern and confirms their projections. It settles them into predictable patterns of response, occupying their minds while you wait for the extraordinary moment — that which they cannot anticipate.
Sun Tzu, The Art of War
Occasionally mix it up. Do something you never thought you could do. Surprise yourself. Surprise someone else. Stay active. Push the boundaries. Push your boundaries. Expand your comfort zone. Stay sharp. Stay focused. Stay alive. Be unpredictable and you will win.
Our society does not deal with unpredictability very well and that is why we must do as Sun Tzu: engage with expectations first; then deliver with the unanticipated.