EN
This paper presents the results of a personal research study on personal growth and key competences indispensable for professional career development in a knowledge-based society. The topic of the article was taken to get the answer if personal development has an influence on professional development in knowledge-based society. The best form of personal development and key competence were identified needed developing career in knowledge-based society. Benefits results from development knowledge-based society have been tested in aid of developing professional development and factors blocking an employee and his career in knowledge-based society. In this article a new non-linear conception of work career and an approach to it by a new generation WLB (Work-Life-Balance).