The truly conscientious will not limit themselves to helping with the more exciting parts of one’s life. They are also scrupulous about offering helpful suggestions regarding such mundane matters as your household arrangements, work habits, mannerisms, and use of the language. There is nothing like a good friend to help you out when you are not in trouble.

Judith Martin (b. 1938) American author, journalist, etiquette expert [a.k.a. Miss Manners]
Miss Manners’ Guide for the Turn-of-the-Millennium, Part 1 “Revised Conventions,” “Advice” (1989)