"The key is not to prioritize what's on your schedule, but to schedule your priorities." - Stephen Covey

Take fifteen minutes at the very start of your workday to identify your absolute top three priorities. Write them down, clearly and concisely, and then structure the rest of your day around accomplishing these three things. This will help you maintain focus amidst the chaos and ensure that the most critical tasks get done, rather than getting swept away by urgent-but-less-important demands.