I think it varies from person to person a lot, for me it’s about substituting words in real-time depending on the conversation. Trying to actively avoid starting a sentence on certain sounds, working ahead of myself to form anticipated responses to certain questions etc. Don’t get me wrong, I’m not always in that mode, if I’m just relaxing w my SO I don’t care, which is comforting, but for my job and the day-to-day it’s a different story..