What do Dolly's Parton's secret to success and Bowen Theory have in common?

I recently watched an interview from ONE's Breakfast Show where Rawdon Christie interviewed Dolly Parton. The interview took place at Vector Arena where Dolly was planning to kick off her world tour. Mr. Christie spoke of several quotes of Dolly that define her secret to success. The quotes are as follows: "I know who I am. I know what I can and can't do. I know what I will and won't do. I know what I'm capable of and I don't agree to do things that I don't think I can pull off." Now that, according to Bowen Theory, is differentiation!!! Oh, I'd like to add that Dolly is one of twelve children, 68 years old at the time of the interview with no plans of slowing down in the near future. I LOVE IT!!! If you have 10 minutes to spare, you can watch via youtube at: https://www.youtube.com/watch?v=UjXzMz-aDgg