"Let your plans be as dark and impenetrable as night, and when you move, fall like a thunderbolt" - Sun Tzu

A lot of Sun Tzu's wisdom from his book Art of War can be applied to any place, where the competition is. This one, for example, is good at war. But psychologist recommend to talk less about your plans too, so you are more motivated to fullfill them. Once you share your plans, you suddenly become less motivated to actually make them come true. It is far greater achievement if you get your plans to the end...