Swallow the pill, don’t just play around with it in your mouth.
If things are unchangeable, accept them. It’s hard and I have a hard time accepting too, but that’s just how it goes.
I can’t change my past. I hate my loneliness and isolation, and there are time when i think of the past and rage/become severely depressed.
But if your accept that it happened, just make sure it never happen again to anyone else you might care for.