Although studies have linked stressful life events with illness, good support resources have been found to mediate these effects. To investigate the processes involved in assessing one's social network, identifying areas where change is desired, and modifying specific social network variables, 18 undergraduate students (14 females, 4 males) participated in a semester long study. Each student monitored a problematic personal behavior and implemented a self-control intervention. During the third and last weeks of class, students completed a social support scale and a social network assessment questionnaire. An analysis of the results showed that in the majority of cases, social network variables were modified by the undergraduates. While greater satisfaction was reported on a variety of support functions with the target individuals, the undergraduates' overall social networks were relatively stable during the time of the study. These findings suggest that it is possible to make self-initiated changes in one's social network. (BL)