This thesis examines relationship between therapeutic change
and significant moments in case of medium-term therapy of a
client with depressive symptoms. In the Introduction part it
describes depresssive disease, systemic therapy and it deals
with an overview of existing research on the topic of
significant moments. This thesis uses Helpful Aspects of
Therapy (HAT) inventory and Interpersonal Process Recall (IPR).
Therapeutic change was found out with Client Change Interview
(CCI). The client was chosen by the test Patient Health
Questionnaire (PHQ-9). Depressive symptomatology  was followed
up by the Personal Questionnaire (PQ). We identified 5
categories of moments based on their link to the outcome. The
therapeutic relationship has significant impact on the outcome
of the therapy. The aim of this thesis is extend the existing
knowledge about the role of significant events in psychotherapy
process.