Finally, I must return to passion again. If you do not believe that what you do can make a difference, forget it. This may well mean working weekends. When I had a great idea, I never cared if it was 1 PM or 2 AM. I was purely driven by passion. Yes, I also had long periods of what, from the outside, may be perceived as ineffectiveness. Those periods are crucial for me to build up passion again — and to leave room for new ideas to emerge in my mind. When this is done and when I have made a draft puzzle in my head, then I am extremely effective.