We all know the saying--that hindsight is 20/20.
We also know that hindsight is often associated with regret.
Most of us find that the regret we feel, is of the "damn-it-I-wish-I-had-not-done-that" variety. We get caught up in the moment, and the next thing you know, you've made an ass of yourself, somehow. It's happened to me...but I personally find that my biggest regret, in hindsight, is not recognizing that something I truly wanted was actually happening. And since I did not recognize it (because I was caught up in my own behavior, sad but true) I never got a chance to revel in it, and treasure those moments for what they were. So while it is not lost on me that, once upon a time, I had a real chance at something I spent many hours dreaming about--the reality is that I missed an opportunity.
So, really.....hindsight could be considered a consequence of your own narcissism. A particularly cruel punishment it is, when it allows you to clearly see the happiness you missed by not checking yourself, as it were....coupled with the heartbreak of knowing that you can never go back in time and make it right.
You can always go forward and try to right things from there, but it is infinitely harder.