Thinking before engaging brain

fjm has put up a very good post about giving (or more to the point, not giving) people unsolicited advice, especially when they have been dealing with an issue for some time and might reasonably be considered to have thought about what you have to say already.

I am fortunate enough not to have a persistent medical condition, but we get a lot of unsolicited advice from people who come into the shop (NOT our regular customers, if any are reading this, and not, in general, our pagan customers, who