I'm a hypnotherapist. I have never been blessed with the opportunity to work with someone who wanted to heal a stutter so I cannot give you first hand experience of success, however I do know hypnotherapists in my community who have successfully healed stutters and, given my experience, I'd be willing to give it a go. The type of hypnotherapy that I do is a beautiful treatment delivered with a lot of heart and soul. It takes around 2-3 hours and we go deep into your past to find the root cause. Then we tap into amazing super conscious processes to help free you from the issue. I go very deep with my clients. Hypnotherapy shouldn't be superficial, it needs to go deep to really affect change.