Each segment has to pay off, so you have to look at it in a very, very micro-level and make each chapter in the book, each segment on a TV show, entertaining and informative, and if you do that then a cumulative affect will be success.
The more I compose, the more I know that I don't know it all. I think it's a good way to start. If you think you know it all, the work becomes a repetition of what you've already done.