It is most problematic to have an internal locus of control:

Question

Quizplus · Accepted Answer

Having an internal locus of control can be beneficial as it promotes personal responsibility and motivation. However, it can become problematic when circumstances are truly outside of one's control, such as natural disasters, unforeseen events, or systemic inequalities. In these situations, a person with an internal locus of control may blame themselves and feel a sense of powerlessness, leading to negative emotional and behavioral outcomes. In the domains of health behaviors and academic domains, having an internal locus of control can be helpful as it promotes self-efficacy and active engagement in achieving one's goals.

It Is Most Problematic to Have an Internal Locus of Control