The factors associated with cognitions about problematic Internet use have been empirically tested in various studies. The aim of the present study was to examine the mediator roles of both life satisfaction and self-esteem between affective components of subjective well-being and cognitions about problematic Internet use. For this purpose, the model that was conceptualized by Davis (Comput Human Behav 17:187-195, 2001), Caplan (Comput Human Behav 18:553-575 2002), and Lent et al. (J Vocat Behav 74:190-198 2009) was modified and used as the theoretical framework for this study. The impacts of life satisfaction and self-esteem on the association between affective components of psychological well-being (positive and negative) and cognitions about problematic Internet use were tested by using structural equation modeling (SEM) in a sample of 480 Turkish university students. The results reveal that by playing a mediator role, self-esteem impacted positive/negative affect and life satisfaction and, hence, indirectly influenced cognitions about problematic Internet use. Examining the roles of self-esteem and subjective well-being will provide a new starting point for further studies.