That's why time management is an absolutely essential skill for a successful medical school career. Time management is based on organization, priority, and focus. Organize your tasks so that they fall into a logical sequence. When you organize your tasks, you can stop berating yourself for not doing what you think you should be doing. Prioritize your activities so that what must get done does get done.
Some activities are more urgent than others.
Focus on the activity that is most important right now. After you've organized and prioritized, pay attention to the task at hand and give it 100 percent until you're ready to move on to the next activity. If you haven't organized and prioritized, you'll always be wondering if there's something more important you should be doing. Devise a system that works for you, and keep it simple. Each of us has unique, individual priorities.