So your post is interesting -- Dean Williams, one of the early speech pathologists interested in stuttering, said that stuttering is what you do when you are interfering with your normal speech. This seems to be in the same vein of your own thoughts about stuttering (e.g., "I stutter from the fear I will stutter"). Even the most severe stutterer is fluent a substantial minority to a majority of the time (e.g., most of the words said are fluent). So, Williams's therapeutic advice was to pay attention to how your speech feels (physically, proprioceptively, how the movements are made) when you are speaking fluently. When you begin to feel yourself "interfere" (e.g., stutter) remember how your normal speech feels and try to move your articulators in that fashion. Williams didn't write a great deal about his "Normal Talking Model" of stuttering intervention. So, there's not that much more to tell you about it.