Yes, I can empathise with this. After 12 years of living in Thailand I became fully acclimatised (read, developed a very robust drinking habit and the ability to eat a seven chilli papaya salad without flinching) and it took me four long and desperate years before the effects of reverse culture shock started to mitigate. I mean it was fucking woeful - one day I'm on a farm in far-flung Southeast Asia getting twatted on turpentine with Sombat and his hombres, the next I'm on the 7.16 to Clapham Junction amid a roiling tide of besuited wankers going through motions.
But life isn't as black and white as I once thought it to be - the grey areas, the gaps, the filler, is what makes it all work. Or at least makes for a higher level of contentment.
As far as your situation goes, Mendip - if it ain't broke and all that.