I overly prepare and it helps me a lot. I also tend to be more bubbly and talk with my hands and I think it helps take my focus away from what I’m saying. If I know I can’t say a word like “engineering” then I won’t say it. Instead I’ll say “oh what’s that word?” Or say I forgot and then move on. I also know that sleep helps A TON so I make sure I sleep well and try to relax the best I can before it.