The changes in the perception of personal well-being that could take place in the next three decades, on a global level, depend much more on social factors than on economic ones. This is the result of a pioneering study developed by researchers from the Institute of Environmental Science and Technology of the Universitat Autònoma de Barcelona (ICTA-UAB) and McGill University in Canada which, for the first time, uses a mathematical approach to project the subjective well-being of the world’s population.