Also, Darren, I’d like to add to Javier’s answer that joining as a Stuttering plan member should help you tremendously because you will then be able to watch Lee’s
50 video lectures on his books (20 of which are specifically on his Stuttering and Anxiety Self-Cures 3rd addition — and 9 of those lessons focus on the Crutches), and also be able to watch any and all 800+ coaching videos in the library. You can sort these videos by topic and watch hours and hours of other students working on similar issues.