From the realization that there is a great gap between the theory of client-centered therapy and its practice, the authors aim to investigate the difficulties and the challenges which arise in the client-centered therapists clinical practice. The therapist's trust in the client's actualizing tendency, indispensable to the success of the therapeutic process, is not attained only through a theoretical knowledge of client-centered therapy. Indeed, it is necessary that the therapist has herself experienced the process of therapeutic change promoted by this approach. The authors analyze the elements of change that need to be experienced by the therapist of a successful client-centered practice. Stages in the therapist's development are also considered.