as we grow, so too does our ability to forgive. you can eventually do it faster and faster... actual problems start to disappear, and you gain confidence in your abilities, but without practice, you will never see its power.
If your lucky you will do something stupid, and you can catch yourself being dumb for no reason.
Then you will get a window into your reactive system.
I have been using a mantra from Lama Yeshe for those extra hard problems,
"It is my Karma and so I let go!"
you know, we are not faeries right?..
perfection is a usual suspect when you notice stuff not actually disappearing!