Saying yes is so much easier than saying no, but nobody else will ever value your time as much as you do so you need to be a responsible steward of it. Say No to meetings. Say No to interruptions. Say No to things that are urgent but not important. Prioritize your time based on impact, be transparent about those priorities with those around you, and stick to them. And never be afraid to step back and take stock; time spent thinking about where you spend your time is an investment that pays for itself.