Psychological problems of university students when deciding on their future careers were investigated. In Study 1, based on the information from free description and previous studies on worries of such students, a questionnaire was created. The factor analysis of a questionnaire identified six types of worries. Comparing the worries of students that had decided on careers with those that had not, indicated that the later group had vague and uncertain worries about the self, and about the lack of self-confidence. In Study 2, the relationship between beliefs about career decisions and worries was investigated. Three kinds of beliefs about career decisions were identified. Results indicated that the beliefs, "career decisions should be made only once and should not be changed," and "my own social assessment is decided by my career," were related to worries about career decisions.