Is there such thing as “becoming fluent” though? Just a few days ago I saw in this group a clip of Biden saying something that came off as if he was unaware of what he was saying, but many people of this community suspect (and I agree with them) that he was actually using a technique in order to not get stuck with one word. I guess to some extend you can control your stutter by using techniques, such as changing words, like Biden did in that clip, caring a lot about your breathing, dealing with anxiety, etc… but most likely it won’t really disappear, it is more of a permanent work to do.