Who knows your biggest weakness/vulnerability?

Do you tend to keep everything private? Who (if anyone) is worthy of knowing your true vulnerabilities?

I'm an open book. Everyone knows me with full transparency.
I only tell people I trust SIGNIFICANTLY about my weaknesses.
I don't share my weaknesses with anyone. It's nobody's business.
I'm not aware of any weaknesses. I've never had to assess myself or wonder about them.
Select gender and age to cast your vote:
Who knows your biggest weakness/vulnerability?
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