I can neither agree or disagree with you because after reading this subreddit for several years and having met many more stutterers at support groups, I would now say that there are most likely many different causes for stuttering. Having said that, that is really of little importance to YOU. I actually came to the same conclusion as yourself regarding my own stuttering about 15 years ago. At the time, I spoke to a renowned speech therapist and was told that stuttering can’t be cured. This made me angry, and I wanted to prove her wrong. During the past 15 years, my stutter has improved dramatically. My ability to express myself with confidence has improved tremendously, and I now participate in situations that I would have never dreamed of participating in before. Having said that, I would not say that I am 100% “cured” because I would like to try my hand at standup comedy, for example, but I am still avoiding it because I am afraid that I will stutter. But my point is that it does not matter at all what other people think. You do you. I think your theory could work for you. Even now, I still feel that what remains of my stutter is a confidence issue that someday I may be able to completely overcome. The opinion of the Internet is of absolutely no relevance to your particular situation. Embrace your theory wholeheartedly and give it your best shot! In conclusion, on a personal level, I can agree with your theory, but I highly doubt that it could be applied to every stutterer. With that, I would suggest a multi-faceted approach to attacking the problem because even though the root cause may have been psychological (in my case and yours), over the course of years of stuttering, neural pathways and other mannerisms (breathing, etc) have developed which need to be altered. Personally, I feel that working on my breathing greatly helped reduce my stutter. As my stutter improved, I feel that new neural pathways have developed. And now I’m at the point that if I can just tweak my psychology a bit, someday I might yet fulfill my dream of being a standup comedian. I wish you the best of luck knowing that I stood myself where you now stand and know that with perseverance and some luck that you can change your future for the better!