It is perspective all the way down, and Mystery at the bottom. Or, as Lao Tzu liked to say, "Darkness within darkness, the gateway to mystery." We will never make sense of it. All the explanations and theories get in the way of enjoying the experience of Mystery. Once we get that it is all Mystery, we can't quit going, "Wow!" and laughing out loud for no apparent reason. And that reminds me of the story of the guy going into a cafe in the deep south and ordering "Coffee, cut the cream." And the waitress replies, "That'll have to be milk, Honey, 'cause we don't have any cream." Don't try to make sense of it, just laugh a lot. And look forward to more.
The only difference between a bad day and a good day is a shift in perspective. Flipping perspectives is the role of the Gateless Gate. The essential act of turning the light around is the back-and-forth, "edge-of-the-coin" optical illusion transition from rational/logical/left-brain seeing to metaphorical/symbolic/instinctive/intuitive/right-brain seeing. If you can master that vantage point, you will be straddling the Gateless Gate, looking right and left, or left and right, and seeing different worlds "without leaving home." That puts you "at the still point of the turning world" (T.S. Eliot), at the fulcrum between worlds, able to shift one world into the other just by changing the way you think about what you are seeing. Nothing is only what it appears to be. Everything can appear to be something else just by the way we look at it. Practice it on your parents, and on your children, on everyone you meet. Become proficient in seeing everything "from all sides." And don't let anyone get by with one-way-only-seeing-- particularly yourself!