Now, or Never
You can either practice this Work or not. But you must all understand that if you practice this Work, now, at this moment (not tomorrow) you are making effort beyond mechanical effort. The point of the Work is to transform daily life. So it is said that if you merely listen to this Work and do not practice it, nothing will change in you.
Suppose, for example, that you hear many times that you must observe your different 'I's and try not to identify with some of them? Well, of course, you can hear this day after day, and year after year, and say that you know all about that, and why is nothing else said. However, you have heard that the Work tells you here to practice a certain definite thing on yourself—now, at this moment—yes, at this very moment.
Maurice Nicoll, “A Short Commentary on the Importance of Individual Work Effort" in Psychological Commentaries on the Teaching of Gurdjieff and Ouspensky (Vol. 1, p. 342)