I understand Nirvana is a Sanskrit word which means literally “breathing out”. Whewww. Letting go of your breath = a particular concept of heaven? So, if you cling to your breath, you will lose it. Interesting. It reminds me of the bible verse, Luke 9:24 – “For whoever wants to save his life will lose it…”
The concepts of clinging and letting go, transience and impermanence, living and dying, all fit together like a puzzle and transcend cultures and theologies.