Actions are irreversible
Countless rebirths lie ahead, both good and bad. The effects of karma (actions) are inevitable, and in previous lifetimes we have accumulated negative karma which will inevitably have its fruition in this or future lives. Just as someone witnessed by police in a criminal act will eventually be caught and punished, so we too must face the consequences of faulty actions we have committed in the past, there is no way to be at ease; those actions are irreversible; we must eventually undergo their effects.
– 14th Dalai Lama
from the book “Kindness, Clarity, and Insight”