Based on Bhagavad Gita Chapter 13, Text 09
The Bhagavad-gita (13.09) indicates that the wise contemplate seriously the inevitability of death in our present existence. The Gita integrates this pessimistic-seeming contemplation into an optimistic worldview that explains how all of us, as eternal spiritual beings, have a right to immortality. We have lost that right due to being covered by materialistic passions and pursuits, just as people lose the right to see due to being covered by blindfolds.
Just as blindfolded people find blindness unnatural, we find our vulnerability to death unnatural. This conflict between our aspiration for immortality and our perception of mortality — like the conflict between the blindfolded people’s longing to see and awareness of their inability to see — has the potential to spur us into spiritual action and thereby reclaim our immortality.