Break down larger projects into smaller tasks. Accomplish one of these smaller tasks first, in order to get you started. Do not become too frustrated if you are falling behind in your goals. Be positive and optimistic when analyzing your progress. Sometimes a small mistake can ruin an entire project.
Computers are notorious for turning small mistakes into monsters.
However, you do not have to apply high standards of perfection when performing smaller tasks, such as reviewing notes. You can accept lower standards only where they are appropriate. Be aware of unfocused time that diminish productivity. Exercise is important but not urgent. We sometimes neglect areas that are important because we are too busy with urgent events.