I pause after every word to slow the rate of speech down. Each pause is like just over a second long( Not to fast and not to slow ) but I personally feel the longer the pause is , the easier the next word comes out. But if you practice the technique over and over just say about 3-4 hours daily for an entire month, it will be natural to you. I also keep my upper body loose and it helps make my voice sound better. You obviously need energy in your voice when using this technique so don't over try loosening up. Maybe try a supplement to control your social anxiety or something. It makes things easier.