You never cure it as I mentioned. What you're doing is you're controlling it through exercises that you are taught in the respective Therapies. Mine, the pfsp focused on breathing and mental awareness of certain in your syncreeses of your speech that cause your stutter. Once you Monitor and control those aspects and for me to stand out of all the targets that I'm taught. Doing so for the last 40 odd years has allowed me to really control my stutter to the point that it does not dominate my life anymore. When you conquer that aspect of your stutter and only when you conquer that aspect do you move on with confidence and knowing that you can speak fluently. But you have to work at it you can't let it slide. Because if you do then you will slip back into old habits.