द्वन्द्व [Dvandva]
Dvandva. Pairing opposites.
Observe life. Ask yourself.
Would you know light if you have never seen darkness?
If you never felt cold, what would hot mean?
What is up if you never came back down?
The entire manifested universe is made of pairing opposites. Things are simply two ends of the same stick. You can never find happiness without sorrow. You can never find anything that will not change.
And yet, you look for happiness in this ever changing world of opposites.