Having lived in a couple of countries, I can say this is a very personal topic.

Some people would thrive in the middle of a desolated dessert, while others will be happy to be in the middle of Manhattan.

Instead of pushing a specific route like the article suggests, i.e. from a High Cost of Living (HCoL) place to a LCoL one, I would invite the readers to simply consider what it is that they want from life and start country shopping.

Once you have your rough idea of the country, which includes things like is is possible for you to obtain the visa, language, etc, then you can start fine tuning the plan by choosing the actual city where you would like to live. Even inside a single country there is a massive difference between cities.

Once you have that city pinned down, I would recommend visiting there for at least a couple of weeks, ideally a few months. Get to see the place, live like a local. You will get a pretty good idea of what it would be to live there.

Once you are happy to go, start the required processes, like getting a visa, learning the language, etc.

Since the world is a massive place, and you are randomly born in a single city, it is quite unlikely that your favorite place to live is the one where you were born. Some people are of course lucky, but it's not the norm.

Explore the world and make it your home!