Here, we can further clarify what can be linked to the life stages in the changes occurring in personal networks. The periods of network reconfiguration that take place within the life cycles are analyzed on the basis of statistical data. The family of origin gives way partially to constructed relationships, which are largely renewed and then undergo the impact of the transition to retirement. A more detailed analysis of the particular period of entry into adult life is carried out, looking at some of its key moments through a few typical cases of "ordinary" transitions but also through the trials of less common events.