Blue-Collar Leadership: Leading from the Front Lines Part 10 of 30. Focus on the mirror. The face you see least is your own. Earl Nightingale said it best, "A man's environment is a merciless mirror of him as a human being." Until we go within, we will go without. We all have a blind spot, and it's in the exact same place: between us and the mirror. We don't know about ourselves what we need to know about ourselves.
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