A to-do list will help keep you motivated and active throughout the day, which will hopefully help you sleep better at night. "I know that when you start the day, it gets a little overwhelming when you don't know what to do, or maybe you have nothing to do and there's no motivation to get out of bed," Dr. Dasgupta told POPSUGAR. He explained that having a to-do list, no matter what's involved, can help structure your day, and "that's one of the most important things."