You have done what a lot of us are sacred to do so be proud of yourself and know that you can't change your way of talking , its who you are and there are absolutely nothing wrong with that. I used to be insecure about my stuttering too but I have reached a point where I accepted that its part of me and I can't change it so why worrying about it ? I have worked in many places that requires talking and I have done the unthinkable , even my co workers used to get jelous of me like how can someone like you be this good lol.