#9: Sometimes, It’s Better to Stay Quiet
It’s perfectly acceptable to tell your friend they have spinach in their teeth, and it’s cool to let a guest know they have some toilet paper stuck to their shoe. However, you should refrain from telling Becky at work that her outfit makes her look like a narwhal.
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As the old saying goes, “If you can’t say something nice, don’t say anything at all.” Everyone has an off day, and it’s not your duty to point out things that might make someone feel bad. Just let it go, and pat yourself on the back for following an unwritten rule.