It's... a hard thing for a director, to think you came up with a shot, something from your mind, and someone died while doing it. It's the worst thing you'll ever have to live with. It was very hard for me to get back on the horse again.
I've also seen that great men are often lonely. This is understandable, because they have built such high standards for themselves that they often feel alone. But that same loneliness is part of their ability to create.