You really do learn every day with every dog; they are all so unique and different. But if you're patient and you understand where they're coming from, and if you are consistent, they will be fine. They teach you to give your full attention.
And so, it is not astonishing that, though the patient enters therapy insisting that he wants to change, more often than not, what he really wants is to remain the same and to get the therapist to make him feel better.