Inclusion Criteria:  written informed consent from adolescent and legal guardian able to attend prevention modules on his/her own language competence Strengths and Difficulties Questionnaire "unlikely" or "possible diagnoses" score on Connor-Davidson Resilience Scale as low or medium resilient, score below cut-off for Revised Child Anxiety and Depression Scale-30 absence of anxiety and/or mood disorders evidence of risk factors  Exclusion Criteria:  age <12 or >18 years in- or outpatient concomitant psychological/psychiatric treatment acute suicidality general medical contraindications that hamper attendance to prevention modules Strengths and Difficulties Questionnaire "probable diagnoses" score on Connor-Davidson Resilience Scale as high resilient presence of mood and/or anxiety disorders absence of risk factors.