"I take it that a successful therapy is an oxymoron"

We can not offer a personal interpretation or point of view. Nevertheless, based upon the meaning of the words, the quote suggests that the idea of "successful treatment" is a mystery or contradiction. To put it simply, treatment is typically a lengthy as well as hard process that handles intricate individual concerns. Consequently, it might be impractical to expect a well-defined solution that causes finish and also irreversible healing.