"Just because it's written down doesn't make it true"

This piece of advice was handed to me by my new doctor.  Of all the things he has said this is the one piece of advice/counsel that has stuck most firmly, and the bit to which I cling when piddling about on the internet.

Unfortunately the bit about being able to walk away and not be upset by something was very short-lived - about a month to be precise - and I'm back to being on tenterhooks on the internet.  This morning I read something that made me very angry indeed.  It was written by a person whose opinions always rub me up the wrong way.  (In fairness I suspect that my opinions make her feel likewise.)  As usual she was spouting off on a topic that has nothing to do with her, and is never likely to affect her.  I had to breathe deep and walk away.  It's her opinion.  I don't share her opinions - on anything - so today's pontifications were hardly a surprise.  It would be pointless to disagree.  So the best option is to simply walk away.  Again.