...One of the reasons that therapy has an open-ended timeline is because it is specifically tailored to each individual. There are many approaches and techniques used by therapists that apply broadly to certain conditions, such as anxiety or marital problems.  However, the application of those approaches and techniques will vary from person to person or couple to couple. Research has shown that no matter what theory or technique a therapist uses, the primary mechanism of healing is the relationship between a therapist and client.  Developing a relationship takes time.  And that means that therapy takes time.