I also have a speech impediment and I struggle with it everyday also to the point sometimes I just walk away because nothing would come out. I have an underbite with braces and had them on for a couple of years now and I think teeth is a small part of stuttering in some cases because your tongue needs room to forms words but it’s mostly mentally if not all mentally. Everytime I read to myself, talk by myself, and think I don’t stutter. When you’re infront of someone or crowded by people and you get nervous you shut down and stutter because you then start to anticipate you stuttering before it even happens. Especially if you struggle with this problem your whole life like me or for a long time, you know words you struggle to say, so you have this limitation placed on that word and tell yourself that you will 100% stutter if you say this word. I can’t tell how many times people told me I had bad grammar or “say this instead” because I stuttered so much that I to take words out of my vocabulary because I stuttered saying them. I think how people with speech impediments gets past this is by facing your fears of talking to others. Most people with a stutter have bad social anxiety like myself and if we just stop caring about what people think, and stop overthinking and having a battle in our head about what we’re gonna say and etc. then I think we’re gonna be fine. My question for me and those who still struggle is, how do we stop caring about what people think?.