Maybe? I'm not sure? It's a fairly throw away comment, I didn't send it to my editor to check for logical consistency or style advice.

Sorry, it wasn't intended as a stylistic comment. It just seemed you're making a recommendation about a treatment by saying that it works for all the people it works for. Would you have any estimate of what fraction of all the people who tried this fully succeed?

I gotcha, it was poorly worded.

My sample size here is extremely small – I know of three people who have used the method (2 read the book, 1 took the seminar) and all three were successes. I don't know of anyone who's done it that hasn't succeeded, but I expect there are tons of those. People who believe in it because it's worked for them are much more likely to speak broadly and loudly about it.