Our local German TV station Vox has a “Docu-soap” called “Goodbye Deutschland: Die Auswanderer” (Goodbye Germany, the emmigrants; Apparently they don’t have an english version of their homepage), for some time now, where they show families leaving Germany for the wonderful opportunities of foreign countries. Most of them fail, because they are badly prepared: don’t speak the language, haven’t got a job lined up already; find that in whatever country they end up, there are natives looking for work, too (who do speak the language), and if you’re badly qualified in Germany, you’re still badly qualified in foreign parts, too.
So they started a second docu-soap: Die Rückwanderer(The returners) of people who got fed up with foreign countries’ culture or could simply not get a job, didn’t manage the language and once their savings were used up, had to leave.
Generally speaking, even if the language barrier is no problem, as others have said upthread, in modern countries you need a job beforehand to get a work visa (and often there are hurdles to protect the natives’ jobs, some sort of quota), so the only jobs would be illegal ones, which are also badly paid and back-breaking and dirty (picking fruits in California at speed).
In more relaxed countries, like some Pacific island, you probably don’t need a visa or work permit, but then jobs generally are rare and already filled by natives, so you end up distributing beach umbrellas to tourists or selling lemonade or similar.
It’s not impossible, but it’s a very risky business, you need the right personality (friendly, charming, no cultural problems) to overcome hurdles, and a lot of luck.
Then you can find the job of your dreams managing a hotel on a Fiji island or whatever. Or you end up being deported from Australia because you have no job and the Aussies don’t want to pay welfare to foreigners with their own country.