Absolutely. I used a list once and when I thought about writing it I thought, do I want to even think about this stuff, writing this out is going to be painful.
In fact it wasn't, it was the opposite, the list turned out to be quite long and succinct and writing it was empowering, not painful (for me).
When I would start feeling bad or ruminating I would bring it out and every time it helped. It's so easy to forget the "bad". No one wants to dwell on it, that's how we are made.
Every time I looked at it, it reinforced why I had gone NC, it truly did help.