“The moment of victory is often the moment of greatest peril. In the heat of victory, arrogance and overconfidence can push you past the goal you had aimed for, and by going too far, you make more enemies than you defeat. Do not allow success to go to your head. There is no substitute for strategy and careful planning. Set a goal, and when you reach it, stop.”
This quote is from, The 48 Laws Of Power, By: Robert Greene