Of course we can talk fluently on our own it’s like when we sing we don’t stutter,,,we use a different part of the brain during these times. There is times when I do not feel anxious/nervous at all and I still stutter in front off people. It’s a very complex condition. And to say to a stutterer that they can stop stuttering if they want to is not helping. You say u have a very mild stutter well some people have a very severe case of it and it not something the can just ‘think themselves out off’