Inclusion criteria:  18 years or older; Living in Madrid or Barcelona Having elevated levels of psychological distress (Kessler Psychological Distress Scale (K10) >15.9). Written/digital informed consent before entering the study.  Exclusion criteria:  Having acute medical conditions (requiring hospitalization) Imminent suicide risk, or expressed acute needs, or protection risks that require immediate follow-up Having a severe mental disorder (e.g., psychotic disorders, substance-dependence) Having severe cognitive impairment (e.g., severe intellectual disability or dementia) Currently specialized psychological treatment (e.g., Eye movement desensitization and reprocessing, Cognitive behavioral therapy) In case of current psychotropic medication use, not being on a stable dose during the past 2 months being on an unstable dose for at least 2 months.