While I am a huge advocate of the fact that not caring what other people think is a key to managing your stutter, I also think and have experienced that speech therapy absolutely works and should not be disregarded. You're taught tools to get through hard situations rather than just trying to make everything a little better and getting stuck when you have a bad speech day. A lot of people achieve huge results by speaking while using their managment tools on a regular basis. By that I mean actual practice sessions you carve out time for. The most "fluent" I ever got was when I was in an intensive speech programme practicing for hours and hours a day. While that's not sustainable, a much shorter and more consistent version of that has been helping me for some time. Find a therapist or programme that works for you( I recommend the SSMP) and stick to the practice and you'll get huge results.