Mark Twain once commented that if you eat a live frog at the start of the day, everything else that you do in the day will look good.
Motivational theorists suggest that if you 'Eat that Frog', tackle that big, bully task first thing in the morning, you will feel highly productive for the rest of the day.
So what do successful people do with the first hour of their day? Check out this article from fastcompany.com
The favorite of mine? Complete at least one task in the morning before you check your email.