I did reply but it seems to be lost so I'll try and summarise again. After various types of speech therapy failed, I started to figure it out on my own. I had a severe stammer most of the time, but occasionally spoke fine. I realised on those occasions when I could speak I was being genuine, speaking from the heart. When I stammered there was some inner conflict - part of me wanted to speak and part of me didn't. Resolving those conflicts improved my speech. Inner conflict can be caused by a load of different things - trauma, anxiety (especially social), emotional upset, tiredness, certain situations (e.g. phone), certain people or types of people (e.g. authority figures), being dishonest or fake. Mindfulness meditation helps to practice awareness which helps to notice bodily sensations and thought patterns. Professional help is best when dealing with the more severe issues, and it's not an easy road. One useful thing a speech therapist did do was ask me to rate my fluency out of 10. I think I said 2 or 3. Then she asked me what level of fluency I could accept. I said 7. Speech therapy got me nowhere near that, but now I would rate my fluency as maybe 8.5, so more than acceptable, still possible improvements to be made. Basically, dealing with the root causes and inner conflict rather than focusing the dysfluency itself is what I do. When I stammer, I think, what about this situation is causing inner conflict? It could be a deep-seated traumatic memory, or something simple like I'm just not sure what I'm saying. Whatever it is needs to be dealt with. Hope this answers your question.