Education and anecdotes. I work a therapist for about 30 mins every two weeks and honestly, I find much of their suggestions kinda neutral. I often ask how they fit to that suggestion. That's where they recommend a book on the topic.

Reading their book recommendations is better for me, because their advice is now given in a format where I can read and review over and over. The books have anecdotes about other use cases. It has studies. It has research paper I can personally dig into.

Honestly, my therapist is less of a "let me explain" and more of a librarian who helps me find resources myself.