Yours might be different to mine. But I most keep me to a mild to moderate stutter by a a mixture of exposure therapy and anxiety reduction. I don't think any stutter is 100% curable. It can reach a point where it's barely noticeable and not a big impact on your life though. I had to just accept a stutter is part of me and I have to move on with it. I try my best to expose myself to things I don't like often enough that they aren't a big problem for me like ordering through a drive through speaker. And my stutter is tied directly to my anxiety levels. Even if I don't feel anxious in my head but I notice my stutter has been worse then usual for a few days. I make time every day to sit and meditate. Just focus on breathing and relaxing. It doesn't improve it over night. It's an accumulative affect but it does work. The biggest thing to improve it though is just accepting its OK to stutter. If you are OK with it. The people around you will be too.