I advise against them. Fluency shaping programs don't work for most people. I went to one based on Hollins. The typical experience is as follows: Spend all day in positive, insulated environment learning techniques which make you fluent. Continue learning new techniques to develop a new way of speaking (which sounds unnatural and robotic) Feel incredible about the progress you've made and how you're able to use this to speak without stuttering. On the last day or something, take your new skills into a real world environment and marvel at being able to talk without stuttering. Go home with newfound confidence. You're given a list of exercises to do everyday at home to maintain your new skills. Your high lasts for a couple of weeks. Slowly you begin to stutter more in more situations. You check in with program. They tell you you need to practice more. You try but your fluency techniques still fail in some situations. You become more disheartened. You put in more effort, but find your techniques becoming less and less effective. You now try your techniques at the start, and then when they don't work you revert back to your old pattern. Now you have two patterns that don't work for you. And in my case, you also kind of hate your techniques because you can't express your personality in them because they're so rigid and robotic.