The reason I found this article so interesting is that it not only points out that to be a successful director one of the steps that helps along the way is to think like an editor as well. As it points out in the article as well it is not necessarily a bad thing to ask questions. It is all about trust, not only as a boss but as a respected team member that is a part of a production team.
But failures are not necessarily a bad thing, if everyone stopped doing what they love some of the greatest inventions or ideas known to man would not exist. One instance that comes to mind is the story of a young inventor who applied for a patient for a "electrographic vote-recorder", regrettably the House of Representatives declined to purchase it. The young inventor I am talking about happens to be a young Thomas Edison.
Much like Edison, failure is not a stranger to anyone in any type of industry. What we do with it or react to it may very well shape who we are and what our futures may hold not only as industry professionals but as what type of person you may be. Personally I think failure build character and even some of the most powerful names in the industry today have experienced some sort of failure in not only their careers but in their personal lives as well.