Now that you have released these feeling into the ether try to let them go.
When the thoughts come up say out loud "NO" and quickly occupy yourself with something else.
It's important that along with accepting what you can't change you accept what you CAN change (YOU and your actions) and put your focus there instead.
I fall prey to paralysis by analysis a lot. I spend far too much time thinking about how there's nothing I can do for my ABF to stop his drinking, I accept I cannot change his drinking, all the ways I have enabled in the past and can't continue to do....on and on. That energy is wasted.
Give it one last GRRRRR! and move on Mama!
Well wishes.
Alice