First we conducted a review of all available literature on the topic of traditional and third wave emotion regulations. Second we performed a meta-analysis on the association between self-compassion and psychopathology from both disorder-specific perspective, and transdiagnostic perspective. Third, we conducted a study with 180 youth with the aim to compare experimentally different emotion regulation strategies within the sadness context. Fourth, we conducted a study with 180 youth with the aim to compare experimentally implicit and explicit components of an emotion regulation strategy within the failure context. Fifth, we prepared various workshops related to emotion regulations and third wave interventions for different audiences: parents, teachers, clinicians, policy makers, youth. Sixth, we disseminated knowledge related to the project through a 3-week Summer School organized by the research fellow at University of Amsterdam. Seventh, the research fellow received an extensive clinical training in third wave clinical protocols. Eighth, we established a productive collaboration between the research fellow, and University of Amsterdam (e.g. co-advising research Master students, co-teaching, preparing new edition of the summer school).