Well, written like that, I can't quite see how it's analagous, but it feels it is.
Ironically, a lot of the reason I'm feeling better is other people knowing me better than I know myself. Partly those who reminded me that the people who respect and admire me swamp the couple of people who shower vacuous platitudes and inadvertant backstabbings my way. But also the two who insisted my low state of mind has a physiological basis. And I started the antiinflammatories, and boy, do I feel better.
That said, if someone's only trying to help and they are being useless, maybe the best favour you can do them is point out how to actually observe and see people. Because I've just realised it is a blessing not a curse.