On phone so forgive spelling. I was 23 when I went to my first adult speech therapy session. The first day was sort of an eval, if you will. I was a complete train wreck stuttering over every other word trying to get my thoughts out of my life and stuttering. Over time and sessions we figured out techniques and strategies that helped me become less of a stutterer. I've battled with it all my life and continue to do so. You have to come to a realization that it is a part if you that will never 100% be cured. But that does not mean that you have to concede your life to it and let it control you. In my sessions I learned that. So I would say that it does help. How much progress you get from it is solely based on how much effort you are willing to put into trying to change and better yourself. If you don't take the sessions to heart and USE it in the real world, those sessions will be all for not.