I believe the following passage describes the yin and yang of all things pretty well.
“It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch of incredulity, it was the season of Light, it was the season of Darkness, it was the spring of hope, it was the winter of despair, we had everything before us, we had nothing before us, we were all going direct to Heaven, we were all going direct the other way – in short, the period was so far like the present period, that some of its noisiest authorities insisted on its being received, for good or for evil, in the superlative degree of comparison only”
—Charles Dickens, A Tale of Two Cities
The world turns one way and then another. The wheel keeps spinning and what is up now will be down later and vice versa. Everything changes including change itself. Sometimes it is like a lightning bolt and sometimes it is a whisper in the midst of cacophony. Sometimes it is so gradual we don’t see it even when it is right before us.