As you've found,it can be very painful. While not forgiving parents,it is still YOUR responsibility for how YOU feel. It's not
easy,but by taking that responsibility,you take your own power
BACK into your OWN HANDS.
The other point,is, by still being angry,you ADD TO your pain,and thus give them power
over you,you add to the original situation. Something like: "Right,they have done this terrible thing to me and its awful,so
I'm just going to make dear self even MORE miserable than
they did."
Hope that's clear enough,give self a hug and try to let
go,and get on with your life.
Deepest Respect,
BLUEDOVE