Ex-director of Wharton MBA admissions says too many people mess up when answering a common interview question

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• One of the most common job interview questions can also seem like one of the hardest to answer.
• The simply phrased "Tell me about yourself," can lead to sprawling answers.
• An ex-MBA admissions director shared a common mistake people make — and how they should answer instead.

For as common an interview question as it is...