Basically people who create are insecure. Think Van Gogh. Think Melville. Think David Foster Wallace. Edna St. Vincent Millay. The list goes on.
Around these people grows up an industry of people who encourage these creators. Especially once they get successful. Agents, promoters, editors, etc.
Our industry has a similar encouragement mafioso. They pop up in trade magazines, at trade shows and events like advertising week. They are usually photographed holding their chins in their hands and with a far off gaze. And they tell you all you need to know to make work that overcomes all the obstacles, that makes people happy, that makes things work.
They issue articles that say things like, "addressing the post literate apocalypse." "Folks simply don't want to read text," says one pundit. Another says something like this "display ads can be reinvented as "dis-play" units: outlets for creative executions in branded entertainment and utilities."