Sages say a person should speak no word without intention. This is described as “distance yourself from falsehood”. “Falsehood” means that you are led by your egoistic desire rather than the will to bestow. Therefore, all we ought to do is keep preparing ourselves for the morning lesson and constantly think about the Light that Reforms since it is the only thing we depend on!
Imagine that all of us are facing a death sentence. But there is a chance to be redeemed. You just discovered that there is some “Surrounding Light,” someone whose first name is Light and whose last name is Surrounding, and he can save your life. You keep thinking: “How do I talk to him? What do I bribe him with so that he changes my sentence?”
That is exactly the attitude you should have while preparing for the lesson.
From the 2nd part of the Daily Kabbalah Lesson 12/13/10, Introduction to the Study of the Ten Sefirot