Implementation of the result-oriented (self-)education paradigm in the general education school requires sustainable changes in didactics not only on the strategic document plane but also in educational practice. However, its implementation in practice is complicated. The success of the interaction between theory and practice largely depends on the teacher's professionalism. Therefore, the insights that have emerged in the context of teachers' practical experiences applying self-directed learning are important identifying preconditions for sustainable changes in didactics. The semi-structured written survey and the content analysis enabled the authors to find out preconditions for changes in didactics, manifesting themselves through the teacher's personal self-actualisation, the student's empowerment to learn and redistribution of powers of participants of the educational process. Research results suggest that identified preconditions for changes in didactics are interrelated and illustrate manifestation of sustainable changes in didactics.