The recent literature developed in the field of happiness economics highlights the overvaluation of income and material prosperity as determinants of happiness, and calls into question many of the assumptions of traditional economic theory linked to "rationality" and the "non-satiety" of the consumer. This article aimed to study which factors explain individual subjective well-being, paying special attention to the role of income and the incidence of social variables and focusing on the case of Spain. As a novelty, this research introduces variables such as trust or the perception of justice, among others. Based on the analysis of the European Social Survey and through the estimation of an ordered logit, we find that, in line with the theory of happiness economics, the material aspects do not play a relevant role as explanatory of subjective well-being, unlike social aspects, such as sociability and trust in people (social capital). In addition, our results indicate that in the case of Spain, the most materialistic people are associated with a lower level of happiness. Thus, it seems that the excess of concern for material and economic issues in the pursuit of happiness undermines socioeconomic and environmental sustainability by causing the "wealth destruction effect". economic welfare [11]. The new approach questions a good part of the traditional assumptions of the economy [12].Despite Easterlin, several studies shed light along the same lines as neoclassical theory [13][14][15], emphasizing that the excessive consideration of income, status, and hedonic consumption in the promotion of subjective well-being were still very present in different fields, such as in the economy, sociology, marketing or advertising [16]. Moreover, it is the contemporary individual, as [17] expressed, who accepts the neoclassical, reductionist, and utilitarian paradigm, as a guide for his behavior.Our goal is to study the main determinants of happiness, paying special attention to the Easterlin paradox, thus, deepening the understanding of the question about what is the real role of income as a determinant of subjective well-being. To do this, we have analyzed not only economic but also social factors. Specifically, and as novelty, this study focused on the analysis of happiness in Spain for the period 2002-2014 and highlights the importance of social factors when talking about topics such as sustainability. In this regard, we should note that in recent times, it has become very important to study social factors to address the new challenges faced by society in the achievement of a sustainable development. Authors such as [18] highlight, as in the transitioning process towards a bioeconomy, the involvement of stakeholders and the enhancement of social capital, which may become helpful in the process of achieving social sustainability. In addition, [19] found that when analyzing green human resource management, the role of social sustainability has been less explored than other pillars of sustainability, such as economic or environme...