We all live in what I call the regret matrix. A parallel universe of existing and former regrets that can swirl in and out of your consciousness. Sometimes you visit it and sometimes it visits you. Something reminds you of a moment that was not your best or even something you have been trying to forget. Out of nowhere a feeling of great loss and emptiness comes over you like a ghost visiting you with a regret or two. Parents are frequent visitors to the matrix of regrets. Parents always teeter on the edge of guilt across the street from regret. So many things that they could have done, things they should have done in hindsight.
But regrets are not all bad. They are benchmarks that you have carved in your timeline. You know why they are there. They remind us of our darker moments and can push us to be a better human.