Misfortune

[Jokingfish]

Can one measure misfortune gathered from previous lives?

[PadmaVonSamba]

Can one measure misfortune gathered from previous lives?

No

[Jokingfish]

If there's bad karma left from previous life and you achieve enlightenment, will you suffer eventually for this past misfortune in any way?

[Dhammanando]

If there's bad karma left from previous life and you achieve enlightenment, will you suffer eventually for this past misfortune in any way?

Yes. In the case of the Buddha, for example, there was one instance of pre-enlightenment and eleven instances of post-enlightenment ripening of unwholesome former life karma:

1. Austerities
2-4. Four occasions of being slandered
5. Getting pierced by a rock
6. Getting pierced by a splinter
7. Being attacked by the elephant Nāḷāgiri
8. Getting cut with a knife
9. Headaches
10. Having to eat barley
11. Backache
12. Dysentry

The karmic causes are given in the Apadāna and its commentary. Here's Ven. Ānandajoti's translation:

https://www.ancient-buddhist-texts.net/ ... /index.htm

In the case of arahants they may also experience the ripening of karmas performed in their present life. The most famous case is Angulimāla, who would regularly be struck by flying objects on account of all the people he'd killed in his career as a bandit.