There is a sleep deeper than the body's, the slumber of a life lived entirely in the dream of thought. You can move and speak and plan and still be utterly asleep to the aliveness of this moment. Sleep on, then, if you must, but understand what such sleep costs you.
The hour is always at hand. The fullness of life, the presence in which everything real happens, is here now, offering itself while the mind dozes in its stories of past and future. To awaken is simply to become conscious in this moment instead of dreaming through it, and each moment you sleep is a moment of your one life quietly handed away.