You need to really concentrate on each word you speak. Every word needs to be spoken with airflow. Your brain needs to learn what you want it to do. Your brain is wired to interrupt airflow when you speak which is why you stutter. A fluent brain is wired to maintain airflow during speech. It was not easy for me. Once I was able to feel the difference between open and closed airflow the brain began to understand what I wanted it to do which is when the brain began to rewire itself. Then it becomes easier and easier as the brain learns. Then it will eventually transform into a fluent brain. I don’t have to think about it anymore now that my brain knows what I wanted it to do. I am finally free of stuttering at least 95-100%. Most people have no idea that I ever stuttered.