Write it down in a letter. Like, take a piece of paper and pen and physically write down your thoughts on the issue.
Do not send the letter! But forcing yourself to organize your thoughts so you can write it on paper can help you externalize your feelings. And maybe help you find some closure.
You can also burn the paper afterwards, as a kind of ritual to “put it on God’s hands” kinda thing.
Ok.
I still think the act of comparing and writing a letter can help you sort out your thoughts.
The “religious” part is, well, irrelevant.