The aim of this article is to shed light on how environmental standards in the life of youths influence the development of self. We propose the concept of 'subjectified subjectivity' to grasp these person-environment dialectics in a general form. By elaborating on these conceptual understandings of youth life, the article also seeks to understand young people from their own perspectives on life and from their developing life-perspectives, rather than from general categories. Based on one of the author's data from her study of young people in their transition to (and through the first year of) high school, we carry out an analysis of a 16-year old high school student and how her approach to beer, to beer drinking as a part of Danish high school life-style, and to herself changes over time. We suggest a dialectical-ecological model to analyze the dialectical and synthetic movements over time of the girl and her environments.