Like the New Deal (19331938), the Next Generation funds were created to consolidate the Welfare State in the European Union during the postCovid19 era. To this end, comprehensive public spending policies are being carried out and supported; it is to be imagined by Keynes' antiutilitarian ideals. This apriorism is rooted in Aristotle's idea of eudaimonic happiness. That is to say, the collective wellbeing of citizens is achieved by formulating active policies that promote the integral development of people through education, employment, culture, innovation, etc. It puts on the academic table that individuals' happiness or subjective wellbeing should be one of the main intangible drivers of prosperity, technological progress, intraentrepreneurship and social development of the territories. It requires, among other things, proactive, dynamic, empathetic and professional behaviour from public administrations, NGOs and companies.Despite the vast literature on happiness, very little is currently known about what social marketing and happiness management can contribute academically to the ecosystems of the European Union's Next Generation Fund era. The purpose of this book is to make readers aware of the following aspects. The first is to understand that there are thousands of theoretical and practical inputs to generate public policies that promote the holistic happiness of citizens. Second, politicians must ensure the collective welfare of people under the guiding principles of sustainability, respect for the environment, social cohesion and inclusive capitalism. Third, the uberization of economies leads to a melting pot of lowcost societies that lower quality of life standards and job satisfaction. Fourthly, the top managers of organizations cannot wait any longer to undertake management models based on happiness management, where the happiness of their human capital is synonymous with corporate wellbeing, economic profitability, digital prosperity, productive efficiency, etc.