**TL;DR summary**: *(of the post)* Practice until you're fluent alone. Then transfer this fluency effect to speaking with other people. I sometimes stutter much less when I pretend/imagine I’m alone, even when I’m talking with another person. I can actually feel my brain switch to a different “mode” and I can talk more fluently. I've worked hard at recognizing my social anxiety and thought patterns, and facing my fears head-on. And age helps too because you tend to accept yourself and stop caring so much what people think as you get older. Join toastmasters. Speaking effortlessly and don't think about the mechanics: moving your lips, breathing, etc. Just talk. Recall what fluent speech "feels like"