Mark Twain once said that if the first thing you do each morning is to eat a live frog, you can go through the day with the satisfaction of knowing that that is probably the worst thing that is going to happen to you all day long.
Your “frog” is your biggest, most important task, the one you are most likely to procrastinate on if you don’t do something about it. It is also the one task that can have the greatest positive impact on your life and results at the moment.
If it’s your job to eat a frog, it’s best to do it first thing in the morning. And If it’s your job to eat two frogs, it’s best to eat the biggest one first.