Separate from the Universe
Usually, I say how we are not separate from Nature and are in fact One with it. I will now say something different.
We are entirely separate from all else in Nature and exist totally within the confines of our own minds. How can anything touch or hurt us? How can we be lacking anything, we, who are so entirely separate from the world that we cannot gain anything, nor lose it. That is, we cannot take anything from the world and incorporate it into ourselves, nor can it take anything from us, being eternally apart.
Use the senses as the selfless observer, simply survey the sense data as it comes to you. Do not be drawn out towards the doors of the senses where you will surely be sucked outside into the whirling chaos of the world. Rather, bring the entire Universe into yourself: it is not selfish to become infinite. Watch the magician's trick, but do not be drawn into the affair. If you let your attention slip for even a moment, you will become absorbed in the outside world just as water is absorbed by a sponge.
Look at things, then "reject" them. As one concept arises after another, reject. When you see an object, see past its edges. Wrathfully rejecting all, practicing un-thinking, you will break through to the clear-light of All-vision.