During tough economic times, the most important asset you have isn’t your house or your savings. It’s your job.

Like a lot of businesspeople, I have been influenced by Sun Tzu’s classic The Art of War. I keep it on my desk at all times as a reminder that business is war, a sometimes brutal competition to succeed that you take seriously or not at all. Similarly, what goes on in the workplace is just one long season of The Apprentice, where each employee competes with the other to keep his job. Nasty stuff, eh? Well, work isn’t a democracy. We don’t get to vote for the way things should be, and nothing’s very fair about how work works, either.

You’re all pumped up with qualifications and experience? Great. Got a swanky Ivy League ...

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