Mind racing

Mind racing Do you ever have that thing where you are speaking and suddenly your mind gets ahead of you and right before say a "harder" word you suddenly stop or pay attention to it so you tense up or try to avoid it or just block? It's really annoying because right when you're doing good your mind is so fast that you stutter its super annoying, does anyone have some kind of psychological trick to at least lessen this? If not I still wish you good luck.