One who delights in personal existence dies with regret and their passing away is not fortunate. One who delights in Nibbāna and gives up personal existence dies without regret and their passing away is fortunate.
Anutappiya sutta - Regret
There, the venerable Sāriputta addressed the bhikkhus:
Delighting in Personal Existence
"Friends, a bhikkhu passes his time in such a way that he dies with regret. And how does a bhikkhu pass his time in such a way that he dies with regret?
1 Here, friends, a bhikkhu delights in work, indulges in work, and is habitually devoted to work.
2 He delights in talk, indulges in talk, and is habitually devoted to talk.
3 He delights in sleep, indulges in sleep, and is habitually devoted to sleep.
4 He delights in company, indulges in company, and is habitually devoted to company.
5 He delights in bonding, indulges in bonding, and is habitually devoted to bonding.
6 He delights in mental proliferation, indulges in mental proliferation, and is habitually devoted to mental proliferation.
Friends, when a bhikkhu passes his time in such a way, he dies with regret and his passing away is not fortunate. This is called a bhikkhu who delights in personal existence, who has not given up personal existence to completely make an end of suffering.
Giving up Personal Existence
Friends, a bhikkhu passes his time in such a way that he dies without regret. And how does a bhikkhu pass his time in such a way that he dies without regret?
1 Here, friends, a bhikkhu does not delight in work, does not indulge in work, and is not habitually devoted to work.
2 He does not delight in talk, does not indulge in talk, and is not habitually devoted to talk.
3 He does not delight in sleep, does not indulge in sleep, and is not habitually devoted to sleep.
4 He does not delight in company, does not indulge in company, and is not habitually devoted to company.
5 He does not delight in bonding, does not indulge in bonding, and is not habitually devoted to bonding.
6 He does not delight in mental proliferation, does not indulge in mental proliferation, and is not habitually devoted to mental proliferation.
Friends, when a bhikkhu passes his time in such a way, he dies without regret and his passing away is fortunate. This is called a bhikkhu who delights in Nibbāna, who has given up personal existence to completely make an end of suffering.
Verse
Whoever is engaged in mental proliferation, who is delighted with mental proliferation; Fails to attain Nibbāna, the unsurpassed security from bondage.
But whoever, having abandoned mental proliferation, delights in the state free from mental proliferation; He attains Nibbāna, the unsurpassed security from bondage.