A back-and-forth shuffling of initiating and responding actions contributes to the transformation of both personal and social experiences. To illustrate these dialectic processes of change, this chapter draws on young adults' experiences of late modern social life. The experience of teaching young adults has been for us a rich source of examples of the construction of Do-it-Yourself (DIY) personal life projects that Beck and Beck-Gernsheim see as the personal response to the demands of life in late modernity. The processes of creating an identity and a personal place in social institutions: the processes of "Individualization" are critical experiences of the transition to adult privileges and responsibilities. A personal identity and pattern of interaction is progressively constructed and affirmed in its expression in multiple person-by-institution encounters. The chapter focuses on how reciprocal activities link the sociological theory to sociocultural psychological theory.