Building Margin

This week was super busy. I over booked myself. I'm learning I need to eliminate a few things on my plate. I'm wondering if there is a way to do this with the principles of design thinking? If so it would look like this: 

• What's has priority right now and why? 
• What things can't I move? 
• What things can I eliminate? 
• What can I shift around? 

I know that it's important to keep wiggle room for unplanned events. And this weekend alone was jammed pack. I ended up being late to certain events.