It could seem like it is really difficult to have a measure to happiness in the world but every year there is a study that show us which are the countries that are the happiest on Earth, and how do they get that information? well, there are many different variables that must count during a investigation, including security, income, life expectacy, healthy life and social support.

According to scientist studies these countries are the happiest in the world in 2018, and even if measuring happiness is something subjective, they were using variables to get these final results.