Neurological predisposition to stutter + anxiety/stress = stuttering. What you describe about not stuttering by yourself is extremely common. Stuttering has an approach-avoidance element. You want to say something—approach—but don’t want to stutter—avoidance. There is a struggle as a result. The struggle is stuttering. The struggle NOT to stutter is the problem. It’s counter-intuitive to want to speak fluently, yet allow yourself to stutter. But that’s how you become more fluent. That’s why you are fluent when you are alone: because you are not trying not to stutter. You don’t care because no one else is there to hear it. Learning how to “stutter fluently” is a critical objective. To ALLOW yourself to stutter reduces the struggle. Letting yourself stutter means you can easily move past a block or repetition. That is fluent stuttering. ————————————————————— Therapy involves psychological and physiological approaches. Resources for you: The Stuttering Foundation-wonderful non profit that has workshops, publications etc. materials are very inexpensive because it is truly about the mission Stuttering podcasts. . Self-directed therapy: SLP Stephen—a stutterer himself, he has an extensive program you can work through on your own or with the help of a therapist. Stuttering support groups in your area The Kings Speech - movie. Every stutterer is different, and the movie isn’t an example of what therapy might look like for you, but it shows certain approaches while the King learns to “stutter fluently.” It’s entirely possible you will become fluent almost all the time. So much so that most people wouldn’t pick up on stuttering whatsoever. So there is reason for optimism. Consider some of the resources above.