"We examine the learnability, antecedents and outcomes of career self-directedness using a longitudinal dataset of Flemish career counseling clients. The results show that the career counseling clients improved their career self-directedness during the counseling and that this improvement lasted for at least 6 months. Furthermore, we found career self-directedness to be explained in a significant way by self-awareness and adaptability, two competences identified by Hall ÄHall, D. T. (1996). Protean careers in the 21st century. Academy of Management Executive, 10(4), 8-16; Hall, D. T. (2004). The protean career: A quarter-century journey. Journal of Vocational Behavior, 65(1), 1-13Ü as crucial for steering one's career. Also, career self-directedness related positively to training participation, job mobility and career satisfaction. The main implications of our findings for the protean career and the career counseling literature are discussed." Die Untersuchung enthält quantitative Daten. Forschungsmethode: empirisch-quantitativ; empirisch; Befragung. Die Untersuchung bezieht sich auf den Zeitraum 2006 bis 2007. (author's abstract, IAB-Doku).