38.2 percent. According to Kelley Blue Book, that’s how much original value your car retains after five years. (Hurts, doesn’t it?) Just like cars, we all have a certain value at our jobs. Unlike cars, our market value doesn’t have to go down. In fact, if we manage our careers right, our value will increase year after year. Here are five ways to maximize your worth as time goes by. 1. Heavy Detailing: To maintain a car’s value, it takes attention to detail. Same goes for your career. In short: know what you don’t know. Co-workers (and even bosses) may never tell you how to improve or reach the ‘next level.’ Read more.