Yudy Young-Silva ^1,2 Anna Berenguera ^3,4,5,6* Dolors Juvinya ^4,7,8 Ruth Martí-Lluch ^10,5,6,9 Paula Arroyo-Uriarte ^11,6 Olaya Tamayo-Morales ^12,13,6 Irene Marcilla-Toribio ^14,15* Usue Elizondo-Alzola ^16,17 Fátima Méndez-López ^18,6 Xènia Chela-Alvarez ^19,20,6 Emma Motrico-Martínez ^21,6

• ¹ Fundació Institut Universitari per a la recerca a l'Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol), Unitat de suport a la recerca, Girona, Spain
• ² University of Girona, Girona, Catalonia, Spain
• ³ Fundació Institut Universitari per a la recerca a l'Atenció Primària de Salut Jordi Goli Gurina (IDIAPJGol), Barcelona, Spain
• ⁴ Department d’Infermeria, Universitat de Girona, Girona, Spain
• ⁵ Autonomous University of Barcelona, Barcelona, Catalonia, Spain
• ⁶ Research Network on Chronicity, Primary Care and Health Promotion (RICAPPS), Barcelona, Balearic Islands, Spain
• ⁷ Grup de recerca Salut i Atenció sanitària Universitat de Girona, Girona, Spain
• ⁸ Càtedra de Promoció de la Salut Universitat de Girona, Girona, Spain
• ⁹ Vascular Health Research Group of Girona, Institut Universitari per a la Recerca en Atenció Primària Jordi Gol I Gurina (IDIAPJGol), Girona, Catalonia, Spain
• ¹⁰ Parc Hospitalari Martí Julià, Institut d'Investigació Biomèdica de Girona (IDIBGI), Salt, Spain
• ¹¹ Sant Joan de Déu Research Institute (IRSJD), Esplugues de Llobregat, Spain
• ¹² Unidad de Investigación en Atención Primaria de Salamanca (APISAL), Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca, Spain
• ¹³ Institute of Biomedical Research, University of Salamanca, Salamanca, Spain
• ¹⁴ Centro de Estudios Sociosanitarios. Universidad de Castilla-La Mancha,, Cuenca, Spain
• ¹⁵ Grupo de Investigación Health, Gender, and Social Determinants. Universidad de Castilla-La Mancha, Cuenca, Spain
• ¹⁶ Grupo de Investigación en Ciencias de la Diseminación e Implementación en Servicios Sanitarios Instituto Investigación Biocruces, Baracaldo, Bizkaia, Spain
• ¹⁷ Osakidetza Basque Health Service, Vitoria-Gasteiz, Spain
• ¹⁸ Primary Health Care Research Group of Aragón (GAIAP), Institute for Health Research, Aragón (IIS Aragón), Zaragoza, Spain
• ¹⁹ Primary Care Research Unit of Mallorca (IB-Salut), Balearic Health Service, Mallorca, Spain
• ²⁰ Balearic Islands Health Research Institute (IdISBa), Palma de Mallorca, Balearic Islands, Spain
• ²¹ Department of Developmental and Educational Psychology, University of Seville, Sevilla, Spain

Introduction: Effective implementation of strategies to promote health and prevent noncommunicable illnesses requires a profound understanding of the interaction between the individual and society. This study brings to health research the consideration of psychosocial factors that influence the maintenance and change of health behaviors and conduct. From a primary care perspective, it is crucial to propose a biopsychosocial approach for the development of health promotion and self-care programs that embrace personal aptitudes as a relevant individual aspect.Objectives: To explore experiences related to personal aptitudes and personality traits that influence health behaviors and conduct, taking into account the social determinants of health, through a thematic analysis based on the capability-opportunity-motivation and behavior (COM-B) system.This qualitative research is carried out from a descriptive phenomenological perspective, based on 17 focus groups in which 156 people participated. Inductive and deductive analysis techniques were used following Lincoln and Guba's criteria of methodological rigor. In addition to 7 different triangulations of analysts, 6 main categories were identified based on the COM-B system: psychological capacity, physical capacity, physical opportunity, social opportunity, reflective motivation, and automatic motivation. The importance of considering these factors to promote healthy behaviors was stressed.Discussion: This study examined how personal experiences related personal aptitudes and personality traits influence health behaviors and conduct in Spain. It was found that personality traits such as health literacy, self-efficacy, activation, and self-determination can influence the adoption of healthy behaviors. Likewise, the need for control, overthinking, and ambivalence made it impossible. Furthermore, social determinants of health and interpersonal relationships also play an important role.