This was my problem. I never had the self esteem and confidence to stutter on purpose in public. I realized I needed to get rid of my stuttering. I spent years studying and researching as to why fluent speakers do not stutter. I came across the Valsalva response which I found was the answer I was looking for. Once I was able to learn how to breathe when speaking I stopped stuttering and I have never had a relapse. It has been a life changing experience.