Don’t read this article, read this book instead: Creativity, Inc by Ed Catmull. He’s one of the founders of Pixar and while the book is laden with Paxarian references and anecdotes, it’s a startlingly absorbing read about all creativity and specifically about how to keep it going.
However, I’ve had this book on my reading list for ages and even though I’ve enjoyed the start so much that I’ve recommended it before, it was only when The Creativity Post summarised it lately that I got it out again.
I don’t honestly think that Creativity Post adds anything to the topic but I’m not doing much better here. So take a look their full piece but, seriously, go buy the book.