"Because of the unfortunate stigma that still exists in the United States around homosexuality ... youth tend to hold back their feelings, don't disclose, live in denial or shame, " Robbins said.

CNN: 24-hour help for gay youth

He believes that as many as a third of employees who are fired don't know why they were let go or are in denial about the real reasons.

WSJ: Turn a Firing or Layoff Into a Learning Experience

We start losing our hearing as early as our 20s, but most people aren't aware of it -- or they're in denial.

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