After having been back in the UK for more than 6 months (from Australia) it became apparent that I had probably suffered from a little Reverse Culture Shock. I was finding fault with everything about the UK and I got angry about many things; for example, I kept complaining about the cities being dirty compared to Melbourne. Well, Manchester is pretty dirty, actually. Haha.
Looking back, I can see that something wasn't right; that my thoughts weren't fully rational and that I was unreasonably agitated.
When you're in the midst of it, it may be hard to recognise, so you have to be on your guard and question yourself honestly.
Regardless, Manchester isn't cutting it for me. Will probably move to Scotland again (!)