I had several speech therapists growing up. But I quit therapy in high school. I achieved fluency in college by doing an afternoon show twice a week on college radio (91 Rock FM) 😎 Doing that show forced me to over prepare what I was going to say when I opened the mic. And it made me listen to myself very intently when I was doing a talk set. I still block from time to time, But they are so slight that only other stutterers notice them.