Ragged Robin wrote:...Who was it said (")dont (sic) critisize (sic) a man until you have walked a mile in his shoes"
Well, the aphorism that you have attempted to paraphrase appears to have originally referred to moccasins, so I'm afraid that there does not appear to be a reliable means of naming the speaker, as his identity is lost in the mists of time...
However, the following is attributed to Steve Martin, one of my favourite actors: -
"Before you criticize a man, walk a mile in his shoes. That way, when you do criticize him, you'll be a mile away and have his shoes."
I always thought that this was particularly good advice, because of the unstated implication that you would also have the advantage of a good mile's head start!
RR, to be serious for a moment, there is no point in getting wound up about it.
From what we know at the moment, which amounts to 'not very much at all', I think we can say that unless Mrs. May pulls off some breathtakingly successful and innovative deals as part of the BREXIT negotiations, (which I, on the basis of 'no information whatsoever' don't believe will happen) then we Ex-Pats will probably find our circumstances altered for the worse, and face some different challenges - varying according to our needs, of course.
As for 'Planning for the worst and hoping for the best' (I know, I phrased that the other way around) it means considering, in advance, what you will do if things really do go 'Pear Shaped' but being really grateful if they don't!
I make no comment on the general prospects for the UK 'post BREXIT' as that is well outside of the topic (and I don't know anyway).