Actor Jamshid Hashempour in her daughter's wedding ceremony

You can use checklists, spreadsheets, Word, Excel, Google Docs—anything, really—as long as you can gather all your thoughts, budgets, numbers, etc., in one place. There are also some great online tools and apps out there that can keep you organized. We love WeddingHappy for staying on track with tasks and AllSeated for visualizing seating charts and venue layouts.