Answer: If a person is already incorporated in the internal work but is now too lazy to constantly support it and to add to it, it’s considered a sin. Since if he doesn’t advance, it means that he is going backward. It’s impossible to stop and stand in the middle.
We sometimes think that we can allow ourselves to take some time off and to rest from this work, but in spirituality there are no days off, the clock is constantly ticking and the counter constantly counts our efforts, so it isn’t like our world where we can stop and be idle, to go to sleep and not do anything until the next day.
This does not exist in spirituality. Perhaps I don’t perform any physical actions, but during this time many Reshimot (spiritual genes) go through me, and if I don’t fulfill them, then it means that I go backward. So I have to make sure that I constantly do something.
My advice is to place yourself, even passively, under the maximal influence of the environment: to listen to tunes and songs, to read our material, to see a lesson one more time or to listen to it, to be among friends. But we have to be very careful in using this means of communication, since along with the gain and the great benefit it can also bring about great loses and harm if we don’t use it correctly.
From the 1st part of the Daily Kabbalah Lesson 2/7/13, Writings of Baal HaSulam