Do you have any recordings from when you were younger before you conquered your stutter? It might be nice to compare them and view the great progress you've made. I think many of us are hypercritical of ourselves. Maybe look into returning to speech therapy to continue to refine your speaking abilities. Honestly, if I had the means right now, I'd return to speech therapy to work on things. For me, I'd work on improving my range. I am very limited with my vocal range. Everything is really flat.