Resentment

Absurdly, [resentment] demands that the irreversible be turned around, that the event be undone. Resentment blocks the exit to the genuine human dimension, the future. I know that the time-sense of the person trapped in resentment is twisted around, disordered, if you wish, for it desires two impossible things: regression into the past and nullification of what happened.

—Jean Améry, At the Mind’s Limits: Contemplations by a Survivor on Auschwitz and its Realities (1964)