The present study investigated how persons’ beliefs regarding their vocational abilities, i.e., career decision self-efficacy, are associated with their perceived academic control, self-liking and self-competence. Furthermore, it assessed the relevance of these four types of self-beliefs for personal job optimism among 268 Croatian college students. The obtained results indicated career decision self-efficacy and participants’ perception of chances of finding jobs nationwide as significant predictors of personal job optimism. Furthermore, the influences of self- competence and perceived academic control on this variable were mediated by career decision self-efficacy. These results extend previous reports and may be informative for vocational guidance interventions.