Those in the bodily concept of life are only dying at every step. They are simply approaching death, "Their Final Destination".
A devotee knows that even at his death Krishna will protect him. The real test of our devotion will be at that time.
If at the time of death one can remember Krishna, one’s life is successful.
Srimad Bhagavatam 10.1.5-7,
If one doesn't practice remembering Krishna while one is struggling for existence, then it will not be possible for one to remember Krishna at the time of death.
The unsuspecting fish, who knew nothing but a life in the river, went about its routine like any other day, but in an instant was ripped out of its reality to meet with death.