Even the most successful executives and leaders can suddenly "go off the track" and ruin their careers. Research on executive derailment has clearly identified the factors that cause previously successful executives and professionals to fail. Watch out for these in your own work career.

1. Poor Interpersonal Style. Although technical competence and successes may initially pay off, as one moves up in an organization or profession, interpersonal skills become more important. In our study of firefighters, technical competence was the key to getting promoted to captain, but lack of social skills prevented captains from going higher in the chain of command.

Having an abrasive or arrogant style, being insensitive to those around you, or coming off cold and aloof can lead to derailment of managers and supervisors.

2. Over-Controlling and Inability to Delegate. In today's team-centered work world, it is critical to be able to work successfully with others to get the job done. Managers who try to do it all themselves, who micromanage, or who are unable to build a team, are likely doomed to failure.

3. Inability to Adapt. Change is the only constant in organizations. Workers who fail to adapt will become obsolete and fail. In one engineering department, the manager was unable to master, or even understand, the new design technology. Due to his own insecurity, he refused to let the new technology be used in his department. The result: they fell further and further behind on projects and produced inferior results.

4. Lack of Transparency. Dealing openly and honestly with those you work with is the key to success. Even if you are justified and fair in the decisions that you make, you need to let people know why and how important decisions (such as promotions) are made.

It goes without saying that unethical behavior is a key derailer for anyone's work career, so the best way to avoid temptation is to be transparent in the decisions you make and strive to be virtuous in your behavior.

5. Inability to Think Strategically. All too often, we get bogged down in the day-to-day work that is in front of us, and focus too much on short-term goals. However, career success requires constantly looking at the big picture, and thinking strategically about where we are headed. Strategic thinking helps us anticipate problems, recognize new opportunities, and build a track record of accomplishments.

More on workplace success and happiness here.

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