There’s a running joke amongst foreigners in Japan that if you have issues in your home country, coming to Japan isn’t magically going to fix them for you. They’ll just come along for the ride, and now you get to deal with those on top of having to deal with living in a foreign country.
That is certainly not specific to Japan. I'd say countries in SEA with their promise of cheap and available sexual adventures attracts the least pleasant kind of migrants ("expats") from the West.
I was listening to music when I encountered a song which lyrics went something like "More or less where he was staring, he found a new home. Now he's sitting by the new window and more and more often old thoughts are coming to him." and this is really really true. The good thing is that being aware of this makes it much easier to deal with your issues.
