Eating your frog is all about starting your work by doing your most challenging task. Brian Tracy outlines a five-step process, repeated daily for 21 days, to make eating your frog a habit:

At the end of your workday, you should make a list of everything you have to do the next day.
Review this list using the ABCDE method and the 80/20 rule.
Select your A-1, which is your most important task.
Prepare yourself by assembling everything needed to start and finish the job. Prepare this straight after work on the day before, rather than in the morning you are planning on starting work.
Discipline yourself to start on your biggest frog and make sure you are working without interruptions.