keep your goals to yourself

Lifehacker shares last week a video from the popular TED conference of Derek Sivers discussing how keeping your goals to yourself can help you reach them.  Controversial in some ways, but something I can completely understand.  It can limit you in some ways when you declare you will achieve something, and this speaker explains how in a very relatable way.  He offers other suggestions on how to build motivation around your goals that make sense.  What do you think about sharing your goals?