Answer: The morning lesson isn’t meant to fill the student. The lesson should shake him strongly and put him in his place, so that afterwards he will be able to choose the direction correctly, to exert himself during the lesson and also afterwards, and to continue living in it the whole day.
The morning lesson is the minimal daily portion that everyone receives and continues to process the whole day. From it he chooses several principles for his internal work and for dissemination. I remember that when I studied, I never missed a lesson except for one time when I was very ill. If you spend the morning without a lesson, you will only feel your corporeal body the whole day and will serve it the whole day.
From the 1st part of the Daily Kabbalah Lesson 1/24/12, Writings of Rabash