Stammering is ok.
You are confident.
You can be whoever you want.
Just imagine your world like this. Go through the world like this.
Yes, the inner voice in your head will try and trick you, like it's done for all these years.
"What! I can't do this. I'm a person who stutters", it will say it.
When it does, smile at it. Keep smiling some more and expose it's weakness. Soon it will begin to shut up.