The Lifebook method is one of the biographical methods that can be used in working with children and young people in out-of-home care and was originally created for children in the foster care system. It is an individually crafted book that encompasses a child’s life from birth to the present moment, written in his own words. Although this method is widely used, the quality and method differ significantly, because implementation standards do not exist. In the last fifteen years this method has come to life in Croatia, first through Summer Resilience Camps organized by the Dutch NGO Vereniging voor Jeugd-en Kinderzorg. After that, a program was developed that allows children to work on Lifebook and in out-of-home environment (in social care institutions). The main goal is for children to become more aware of their positive characteristics, pleasant events and experiences with different people in their lives through the process of creating a personal Lifebook, and also to acknowledge themselves as a strength and an important resource. Due to the lack of information about Lifebook, the need to expand knowledge about the experiences of children and youth, and the impact of the method on strengthening self-confidence, the aim of this research is to consider the possibility of applying the Lifebook method in strengthening self-confidence of children and youth in outof-home care. This aim brings up the following research questions: what personal gains do young people recognize from the application of the Lifebook and how do these gains affect their self-confidence? In order to answer these questions, four focus groups were conducted with children and young people from out-of-home care, participants of the Resistance Camps. Based on the qualitative analysis, it is found that children and young people recognize personal growth and development with the help of a group, faith in a better future, awareness and experiencing pleasant emotions, building a positive self-image and identity and strengthening individual resilience and as a final gain they cite a change in the way of perceiving the past. The value of the Lifebook and its contribution to strengthening self-confidence lies in the fact that it enables the identification and strengthening of personal strengths of the individual and his environment, which will consequently affect the development of self-confidence.