The problem is that in the beginning, when you go into your eye
you find it difficult to dissociate the vibration from the light and
the space. You get a bit of everything: vibration, light and space,
all at the same time. So in night practice it is better to avoid the
eye altogether, because the intensification of the vibration would
be opposed to the natural direction of sleep.
But when you are more advanced and able to bring the space in the
eye at will, without any vibration, there is no reason why you
shouldn't be in the eye during night practice.
13.9 Allow enough normal sleep
When some people hear about techniques of deep relaxation,
psychic sleep and others along the same lines, they sometimes
design a strange arithmetic. They hear that one hour of psychic
sleep can help them to recover as much as three or four hours of
normal sleep. Then they think: “One hour of psychic sleep equals
four hours of normal sleep. Therefore I'll have three hours of
psychic sleep every night, and that will do. What a lot of time I'll
save.”
These calculations are based on a misunderstanding! The people who
think that sleep is a waste of time are completely missing all the
astral events that normally take place in the course of a night.
First you would need to become a grand master of psychic sleep
before your body could recover enough with only three or four
hours per night. But even if that were the case you would still
benefit from all the experiences of maturation and travelling that
occur during the night. The desire to reduce the amount of sleep
comes from a very materialistic perspective, and does not
correspond to the reality of the process of transformation.
Night practice should be understood as a way to make your sleep
more efficient and enlightening, not to replace it. A reasonable
duration of night practice is between 30 and 60 minutes before
going to sleep, plus one or more sessions during the day if you
wish. But in order to allow the process of transformation and the
building of your subtle bodies to follow their course, keep your
normal hours of sleep every night.