This paper draws on a three-year ethnographic study during which we investigated young children's cultural development in a Brazilian early childhood centre. A cultural-historical approach was used to understand the concept of autonomy. We focus on Danilo, a very young child who overcame his fear of using a play slide (a cultural artefact). We believe that this process led to his achievement. Our findings suggest that young children's conquests consist of intentional actions that become part of their individual and social identities.