You will find that anything you say has enormous impact on the people around you.  You may make an offhand comment and find that people have scurried around to do what they thought you sent them a signal to do, even though you were merely thinking out loud.  If you do think out loud, you may be viewed as indecisive because people feel that you change your mind too often.  Similarly, a hint of a negative comment about one of your employees is likely to echo through the grapevine and reverberate to a much greater extent than you ever intended or believed possible.  Consequently, you may not have anyone to talk about your own problems in the organization.  You may not be able to think out loud.  Many CEOs take on confidential advisers for this reason.  Doing so is not a sign of weakness or an indication that you can’t perform your job; it is simply a functional necessity.  You will probably find that you do need to talk things out, and it helps to have someone you trust serving as a sounding board.

Source: Growing Pains: Transitioning from an Entrepreneurship to a Professionally Managed Firm  by Eric G. Flamholtz & Yvonne Randle.