Our project aims to strengthen the quality of youth work by equipping youth workers with the competences, tools and partnerships needed to better support the mental health and wellbeing of young people. Across Europe, young people face increasing stress, anxiety, and uncertainty, while youth workers often feel underprepared to respond. This is especially true for young people with fewer opportunities, such as those from rural or disadvantaged urban areas, migrants and minority youth, early school leavers, and unemployed young people, for whom youth workers are often the first point of contact when seeking help. The main objective of our six-day international Partnership Building Activity is to build the professional capacity of 48 youth workers from 12 organisations to address these challenges through non-formal learning, intercultural dialogue, and project development. We want to create a safe space where youth workers can reflect on their own practice, learn from each other, and co-develop innovative approaches that strengthen wellbeing in youth work. From a youth work practice perspective, our project pursues several concrete objectives. First, it aims to increase youth workers’ knowledge of mental health concepts and their ability to recognise stress responses and risk factors among young people. Second, it develops practical skills in self- and co-regulation, compassionate communication, and resilience-building, which are directly transferable to local youth work activities. Third, it promotes attitudes of empathy, inclusion, and intercultural sensitivity, enabling youth workers to create safe and supportive environments where all young people can thrive. Beyond the development of individual competences, our project seeks to innovate at the organisational level. Youth workers will co-create concrete tools such as reflection methods (learning trees, story stones, body sculptures), self-care practices, and wellbeing-focused programme designs that can be integrated into the daily work of their organisations. Each national group will develop an action plan to ensure that these methods are applied with their young people after the activity. By connecting with local NGOs, schools, social and health services during the programme, participants will also strengthen cross-sectoral cooperation, reinforcing the role of youth work as a key partner in supporting mental health. A further objective is to reinforce European cooperation by enabling organisations to design new Erasmus+ projects. Through structured project labs, participants will explore the criteria and opportunities of KA210 and KA220, draft project ideas, and test their relevance to the needs of their communities. At least three follow-up projects are expected to be submitted within six months, ensuring sustainability and multiplying the effects of the PBA. In practical terms, the project will produce high-quality learning outcomes for participating youth workers by improving their competences, confidence, and motivation. It will reinforce and in some cases transform the participating organisations’ youth work by embedding wellbeing as a core dimension of their practice, increasing their innovation capacity, and expanding their international networks. It will also contribute to recognition of youth work by demonstrating its value in addressing mental health, a theme of growing importance in European societies. The expected benefits are clear: youth workers return to their organisations with new tools, fresh perspectives, and concrete partnerships. Organisations gain greater capacity to support young people with fewer opportunities and to initiate future Erasmus+ projects. Young people themselves will benefit from youth work that is more inclusive, more innovative, and more responsive to their wellbeing needs. By linking directly to the objectives of the Erasmus+ programme, the European Youth Strategy 2019–2027, and Youth Goal 5 “Mental Health and Wellbeing,” this project makes a concrete contribution to the professionalisation and innovation of youth work in Europe. It supports the quality, recognition, and sustainability of youth work at local, national, and European levels, and creates lasting partnerships that ensure the results continue long beyond the lifetime of the project.