One is fortunate that it does not depend upon the whim of any personal self as to whether there will be night, the night that is needed, the night of non-manifestation that is called sleep. Nature works rhythmically and yet flexibly, for each day and night and every hour of each day or night is not the same as any other. And it can be coloured, given a tone and texture by the way in which one uses it by withdrawing into one's inmost, deepest self. There is flexibility in the very attempt to keep pace with the Law, even though one does not understand it but only senses its direction. If one respects that Law, one can take proper advantage of it and thereby develop a cheerful, creative flexibility.
Creative flexibility is meaningful if it is accommodated within a self-chosen discipline.
Using what one already has allows magic to take place, but not using it will have its own unnecessary karma, which means one has made oneself unworthy by non-use of what one has. Nothing in terms of the restless mind. The restless mind is constantly trying to figure out short-cuts and diversionary tactics, which are inefficient because illogical. One must necessarily return to where it all starts and ends in the realm of manifestation, the problem of the mind. The mind must be stilled.