I grabbed this from a wonderful site, Brainpickings. Worth a watch or two. All of my experience tells me this is dead-on. Read entire article here: http://www.brainpickings.org/index.php/2012/04/12/john-cleese-on-creativity-1991/ with the bullet points: Space; Time; Time; Confidence; Humor. BTW, I’ve finally decided, I want to die laughing.