Humans are creatures of habit with an insatiable need to see familiarity in other people’s actions. Your predictability gives them a sense of control. Turn the tables: Be deliberately unpredictable. Behavior that seems to have no consistency or purpose will keep them off-balance, and they will wear themselves out trying to explain your moves. Taken to an extreme, this strategy can intimidate and terrorize.

Too much circulation makes the price go down: The more you are seen and heard from, the more common you appear. If you are already established in a group, temporary withdrawal from it will make you more talked about, even more admired. You must learn when to leave. Create value through scarcity.

Knowing about your rival is critical. Use spies to gather valuable information that will keep you a step ahead. Better still: Play the spy yourself. In polite social encounters, learn to probe. Ask indirect questions to get people to reveal their weaknesses and intentions. There is no occasion that is not an opportunity for artful spying.

If you need to turn to an ally for help, do not bother to remind him of your past assistance and good deeds. He will find a way to ignore you. Instead, uncover something in your request, or in your alliance with him, that will benefit him, and emphasize it out of all proportion. He will respond enthusiastically when he sees something to be gained for himself.