Oh. Sounds along the same vein as what I do. Maybe
Here's her four questions for the curious:
Q1. Is it true?
Q2. Can you absolutely know that it’s true?
Q3. How do you react, what happens, when you believe that thought?
Q4. Who would you be without that thought?
I'd say I do that plus I might just say well - I ought to just admit it and move on. I don't like it but I need it or whatever.
Btw, when I google Katie Byron I only get results for Byron Katie.
she uses both versions of the name. Yes these 4 questions are about 50% of the method. Basically you write down a belief following the instructions and then you do the questions and the turnaround(s) for each part of the belief. Here is an excerpt from an early book of hers which sums it up clearly enough IMO.
Also, there are pdfs with detailed instructions on her website and there is an online community (mainly FB) whose members facilitate each other in inquiries.