Do you want to work reasonable hours, and have a life outside business? You will have to prioritise what you do to achieve this. LB4: Getting Stuff Done discusses several techniques that will help.
Reduce the overwhelming number of things you have to do to a more manageable workload. Work reasonable hours and have a life outside your business.
Once you have learned these skills, pass them onto your staff. Watch how productivity will improve.
Learn about the horrors of multi-tasking. Implement some de-stress strategies.
Sound perfect? What are you waiting for, start on LB4: Getting Stuff Done now. Think of the leisure hours you will gain.