Not a proactive feeling
It is
disappointment,
Sorrow even remorse
A choice we dwell upon
merely wishes
Things was different in past time
Our mind trap in
Time machine
forgetting to act to cause a difference.
We tend to stay in plague of regret
By replaying same images
Dawn in sleepless eyes
Regret rises
Darkness held beneath us
Isolate in shadows of errors
Dark consciousness
soul is then drained of its deepest regret