There are so many occasions that I get entirely absorbed in a feeling, usually euphoric, that I believe it can last forever. But that is an illusion and nothing stays the same. And if it did stay the same, it wouldn't be euphoria in the first place. It would be the norm, the default, and then I wouldn't be happy in the first place.
It's the relentless cycle of happiness and sorrow. One's nothing without the other.
Hence, let's rejoice in sorrow.
Notwithstanding, some choose the fence and practise the art of detachment.
Show me a sign.