I haven't read the article yet, but long-term "recovery" is possible. It's not perfect fluency, but it's significantly improved. I still have bad days, and have to work to manage my fluency, but I don't let stuttering hold me back, and I'm fluent enough that most of my friends don't even know I have a stutter. I'm writing a book about stuttering, and I'll include more about it there. (Actually doing some more reading on the subject now.) In the meantime, here's a [link](https://scholar.google.com/scholar?hl=en&as_sdt=0,22&q=phenomenological+unassisted+recovery+stuttering) to a great article on the subject. On the top link, "A phenomenological understanding of successful stuttering management," click on "[PDF] researchgate.net" to see the full article.