To begin knocking off the habit in the evening, then the afternoon as
well and, finally, the morning too is better than to begin cutting it off
in the morning and then go on to the afternoon and evening. I speak from
experience as regards smoking and can say that when one comes to within
an hour or two of smoke-time one begins to be impatient for it, whereas
there will be no impatience after the time for knocking off has been
confirmed as a habit.