Thread: Exploring Delta Sleep

I forgot to mention that another option or possibility according to B.A Wallace ( Dreaming yourself while awake ) is to focus gently on hypnagogic imagery. This seems also an interesting and perhaps easier approach. I will quote him, this is available for preview on google books.

Another WILD approach is to pay attention to hypnagogic
imagery as you fall asleep. This can be done either when you fall
asleep at bedtime or upon awakening during the night. If you
are able to maintain some clarity-to stretch your attention a
little further than normal into the process of falling asleepyou
will be able to detect broken images, dreamlets, and a variety
of visual patterns that are part of the process of losing
consciousness as we fall asleep. These images occur in a space
between initial drowsiness and light sleep (that is, during NREM
1). If we are able to maintain lucidity through this transition, we
will find ourselves in NREM 2 and conscious of dreamless sleep.
Maintaining your attention on hypnagogic imagery requires
that you observe in a very gentle and passive manner. View these
images without becoming excited, making no attempt to hold
onto or enhance them. If you can maintain this delicate balance,
eventually full-fledged dreams may form from them. Remain
passive, and simply allow yourself to be drawn into the
dream. Preparing to fall asleep using the shamatha practice at
the beginning of this chapter is very helpful in this approach.
This type of WILD has much in common with the practices of
dream yoga, which we will explore in later chapters