During the last decades, immigration to Sweden has increased. As a result of this, a larger number of individuals are growing up with two languages. This means that the field of bilingualism has emerged as topic of relevance in Sociology, as well as other disciplines of Social Sciences. Bilingualism has been studied from different perspectives in Linguistics. However, in Sociology, focus has been mostly on the questions of integration, culture and ethnicity, where language has been seen as one of many aspects. I argue that bilingualism is an important social phenomenon in its own right, since it shapes the everyday lives of bilingual individuals and changes the landscape of our society. Using Grounded Theory, bilingualism in the everyday life is analyzed and explored, using material from qualitative interviews with ten individuals who have grown up with Swedish and one other language. It is here suggested that bilingualism in the everyday life can be understood as a process of handling ambivalence. This process takes place between the social context and the self and is influenced by and influences them both. A central part of this process is bilingualism seen simultaneously as tension and as resource.