A social network for affecting personal behavior is provided. The psychological and behavioral progress of a registered user of the social network is maintained. The social network provides the registered user with friends who can track the user's progress and encourage the user by communications with the user. The friends of the user can be anybody, including people who are not registered with the social network. A dynamic mechanism for grouping different users into support groups is also provided. The grouping is based on the user's progress, satisfaction with the user's supporters, and the user's traits and preferences. User-customized profiles are used to elucidate user traits instead of standard direct forms to avoid incorrect or misleading responses to the forms. In addition, a wireless portable device in communication with the social network of friends and supporters is provided for constant access to sources of motivation.