In the June 2011 issue of Harvard Business Review, “The Paradox of Excellence,” Thomas J. DeLong and Sara DeLong explain how and why high achievers often undermine their leadership by being afraid to show their limitations. Here are some behaviors that, although they may help someone to achieve success, can also get in the way.

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The classic high achiever is:

Driven to get results. Achievers don’t let anything stop them. But they can get so caught up in tasks that providing transparency to colleagues or helping others feels like a waste of valuable time.

A doer. Achievers believe, often rightly, that nobody can do it as well as they can. That can make them poor delegators—or micromanagers.

Highly motivated. Achievers take all aspects of their jobs seriously. But that means they often fail to distinguish between the urgent and the merely important.

Craving of positive feedback. Achievers care intensely about how others view their work—but they tend to ignore positive feedback and obsess over criticism.

Competitive. An appetite for competition is healthy, but achievers obsessively compare themselves with others, which can lead to a chronic sense of insufficiency, false calibrations, and ultimately career missteps.

Passionate about work. Intense highs can give way to crippling lows. For achievers, it’s a fine line between triumph and agony.

A safe risk taker. Achievers aren’t likely to recklessly bet the company on a risky move, but they may shy away from the unknown.

Guilt-ridden. Achievers are driven to produce, but no matter how much they accomplish, they feel like they aren’t doing enough.

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Thomas J. DeLong is the Philip J. Stomberg Professor of Management Practice at Harvard Business School and the author of Flying Without a Net (Harvard Business Press, 2011).

His daughter Sara DeLong is a psychiatrist in private practice and community mental health in San Francisco and an assistant clinical professor at UCSF’s Department of Psychiatry.