I’ll go first: “You have to have children when you’re young,” told to me when I was in my late 20s, with no desire to ever have kids, and no means to support them, by someone divorced multiple times with at least one adult child who does not speak to them.
Also: Responding to “How do I deal with this problem?” questions with “Oh, don’t worry about it, it’s enough that you’re even thinking about it!”
“You just have to work through the pain.” I’ve injured myself multiple times in the past exercising by following this idiotic advice.
It’s one thing to push through discomfort, that’s how your body gets stronger. But If you’re in actual pain, stop and listen to the alarm bells your body is giving you.