Apart from this eternal present moment now, all things, events, people, whatever, are temporary. Nothing lasts. It might be there for just a second, a few minutes, a week, a year, several years but it will go.
When we are in a good place, it changes, and when we are in a bad space, it goes. Everything has to have the opposite in order for it to exist.
There always has to be balance in the universe and we can observe this every day in nature and the environment. So is the same for all human life and activity.
Everything passes and that’s why nothing really matters except to be present in this moment and be conscious and aware.
The Yin and Yang of life will always be and that’s why it’s best to just be and accept all that is as it is.