Ok ok ok, maybe not so secret and not so sexy but quite thorough and very hard to not make progress with this method.
I have developed this coaching method for 12 years now and I road tested this method for the last 8. I am still using it.
I have used it with busy parents, CEO's who fly private jets, professional athletes and your couch to 5km client. Why? Because it's simple to remember and it works.
What is hard about it? You must buy into the idea that it will take time to see long term results. But isn't that what you want?