D espite their dubious impact (see Chapters 3 and 4, this volume), the primary training models in psychotherapy have remained mostly unchanged. Specifically, the focus has largely been on training therapists to academically determined competency thresholds and then encouraging fidelity in applying such competencies across patients, contexts, and time. As one prominent version of this approach, therapists are trained to administer somewhat theory-narrow empirically supported treatments (ESTs) for specific disorders, with the replicable use of the theory-prescribed ingredients ostensibly signifying a clinician's competence. Although EST-centered training can be useful, as we know that many therapists become generally effective, we have little evidence that it is the training method itself that causes providers to become effective. Additionally, this approach is limiting in that it privileges treating the average patient rather than the individual, thereby neglecting those who may be less likely to respond to an EST when delivered in its standard form. Further, this EST-centric approach also implies that change will generally be linear-with few, if any, major bumps in the road that require therapists to shift their theoretical orientation during treatment.