Rhetorical devices are techniques that can help you make your speech more persuasive, memorable, and emotional. Some common rhetorical devices that motivational speakers use are repetition, contrast, questions, metaphors, and anecdotes. Repetition can help you emphasize your main message, create a rhythm, and make it stick in your audience's minds. Contrast can help you highlight the differences between two situations, options, or perspectives, and create a sense of urgency or importance. Questions can help you engage your audience, stimulate their curiosity, and make them think. Metaphors can help you explain complex or abstract concepts, create imagery, and evoke emotion. Anecdotes can help you share a personal or relevant story that illustrates your point, builds rapport, and adds humor.