Do you know when the last hour of your day is? If you do, then you’ll know when you have to get everything done. If you don’t, your hours in between the first and the unknown last hour will not be as productive.

Write a list of the top three things you want to accomplish the next day.

Kenneth Chenault, CEO and Chairman of American Express, creates tomorrow’s “top three” list at the end of the day and then uses it to start his next day, Abbey Reider said.

Know what the last hour of your day is

This is probably the most important piece of advice to maintain your work/personal life sanity. While having an active mind about work can be good for you and your business, don’t be a work “grazer.” If you trickle your work day off by answering one more email or one more Facebook update, you’ll constantly feel exhausted and you’ll never get any truly “free time,” which is key for reenergizing.