You can organize your work flow and schedule during the day. Choose different big sand hour glasses to time and supervise different tasks. You can reduce the number of late nights by arranging the tasks you need to do during the day. Staying up late is a bad thing, but there are still many people choose to stay up late because they are working overtime or they are too stressed and need to relax themselves. You can keep your day's work or study schedule in order and monitor yourself with an hourglass. The personalized hourglass will help you finish your tasks on time and relieve your stress. You'll also have an easier time falling asleep at night. If you stick to it for a long time, it will become a virtuous circle.