When you feel yourself ruminating about the past, what do you do to snap yourself back into the present?

Following this thread. Really struggling with this today

One of my hardest things is struggling with ruminating over the past. They are constantly popping into my head.

Following up! What ended up helping me was listening to music I know well - much harder to dwell on negative thoughts when the little voice in my head wants to sing along

I tell myself to stop because ruminating about it didn’t work before. Then I just notice the thoughts come in an don’t engage with them.