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!”
Simple suggestions like this are shit advice at the surface, but they often are the answer in the end. You have to dig and find that internal will to realize them.
Easier said than done, though, so maybe take some drugs to just stop worrying.