Hmm. I've become more adept at appropriate communication the older I've gotten. I don't usually stumble over the right thing to say. I sometimes lose the exact right word, but I have a decent enough vocabulary that most often I can quickly substitute another one.
You all know what a motormouth I am

which has been the case all my life! In my earlier days my words would tumble out, and trip all over themselves while I tried to get everything said. These days I've learned to take my time, sometimes even stating "I'm going to think about that a bit" or "give me a minute while I figure out how to respond" or the like.
And I'm VERY stubborn when someone tries to press me to respond immediately. Nope. I'm going to take all the time I need!