Final answer:
Ilyana's therapist is referring to the concept of a positive self-concept, where the ideal self and the real self are closely aligned, a theory developed by Carl Rogers in his client-centered therapy.
Step-by-step explanation:
Ilyana's therapist suggests that when the descriptions of how she would ideally like to be and how she actually is are nearly alike, the person is thought to have a positive self-concept. Carl Rogers, a humanistic theorist, elaborates on this through the concepts of the ideal self and the real self. High congruence between these two selves leads to a greater sense of self-worth and a healthy, productive life. This therapeutic approach is part of Rogers's client-centered therapy, which aims to empower individuals by providing them with unconditional positive regard, genuineness, and empathy.