"People underestimate how much work it takes to prepare. The speakers who make it look effortless are the ones who've spent hours getting ready. Schedule ample time for writing and rewriting your speech and practicing it aloud, whether on video, a voice recording, or in front of the mirror. (You won't know if your speech works until you hear it out loud.) You're better off doing shorter sessions every day over a longer period than cramming a couple of days before. And I know this sounds like a lot, but for an important speech, I believe every minute you speak requires an hour of preparation."