Here is an activity that one of my clients, many years ago now, encouraged me to practice, as it had potentially wonderful results.
Here is my version of “scenario building.”
Sit quietly with closed eyes. Do so to relax in preparation for an upcoming meeting that is 15-20 minutes away, for example. Once you feel comfortably relaxed, begin to imagine the impending meeting as it starts and turns toward you. Imagine what people may potentially ask or state for your response. Then imagine yourself responding perfectly well.
Again, allow yourself to imagine other potential assertions and questions that could be posed to you, and again imagine yourself responding with a perfect reply.
Continue with this process of imagining potential inquiries and your ideal retorts. The wonderful results that you receive by doing this exercise will perhaps be obvious. You are preparing yourself for a successful meeting.