You know I know the feeling your going through. I used to think nobody’s got time to listen to me because I took a lil longer to speak but thinking this made me try rush speaking and I was bad at speaking average speed. Something about being around other people while trying to speak just ended badly. It may seem like a weird thing or not, but try talking to yourself sometimes like really out loud. Hear your voice and practice a phrase, a poem or even read from a book. The goal here is to get comfortable hearing your own voice. Know how you sound and what words you get blockages on. Genuine people will wait for you to finish what you are saying so just hang in there and keep on practicing. Stay calm and composed while you speak slowly and clearly. You will automatically start to speed up once you master this technique. Feel free to pm me if you want to talk some time.