In order to survive, spies have to be really good at their jobs.

They're required to gain their opponent's trust and respond to a crisis quickly.

In the book "Work Like a Spy: Business Tips from a Former CIA Officer," J.C. Carleson writes about her experience as an undercover agent for the Central Intelligence Agency and the business and career tips she gained during those eight years.

From her experience, we compiled nine career tips that can help any employee reach the top of their professional game — and survive.