I agree with everything you're saying and have gone through a similar journey. I'm also at a point where my stutter doesn't hold me back anymore. I also believe that a major reason why I've been able to manage my stutter in a way that I am in control of it in pretty much any situation is the daily mind training I've been doing. Everytime I do negative self-talk, I catch myself and turn it into an opportunity to do positive self-ralk instead.