What's the difference between workers who get ahead in their careers and those who get left behind? In one word: Initiative. Some employees may make a point of seeking out opportunities to learn new things while others are content with the status quo. Some are quick to jump on problems and turn them into opportunities; others avoid tackling challenges. Some have ideas and plan to implement them, which they put into action; others prefer to be told what to do. As a result, some employees advance quickly in their careers, while others seem stuck where they are, moving slow or not at all.