Hmm.. I don't know what your history is with stuttering, but as someone that has spent 50K+ (that figure is me + my parents) countless hours trying to prevail, this makes the most sense than what I've heard from a doctor, therapist, or researched personally. This may be different than you which is fine. ​ I never said it's NOT possible to stutter alone, but in my case I never have, zero, none, nada. As someone that doesn't stutter reading/talking out loud alone, and is very fluent with some people, but the next minute or in a different situation my speech goes to crap, this makes complete sense why I personally stutter. ​ Best of luck to you