The Time Box methodology is no secret - From Bill Gates and Elon Musk to Benjamin Franklin, Time Boxing is known to help immensely with productivity.
Harvard Business Review studied the top 100 productivity hacks and Time Boxing was number one.
3 Step Guide to Time Boxing:
1. Brain Dump: De-clutter your mind. Write down all the tasks you wish to complete for the day.
2. Prioritize:Choose the top 3 tasks that MUST be done today.
3. Time Box: Allocate time for your tasks. The boxes are in increments of 30 minutes.