Sometimes, these verbal loops tend toward the slightly manic, so I try to butt in and break the cycle. These days, all that happens is that I will say, "Julie...", and Julie will stop dead and 'complete'* the phrase with, "...shut up."
At first, however, all I could do was this.
|(Hands up who misses Calvin & Hobbes...)|
Recently, I broke a loop...
I know that feeling. In my case though, it's more that I zone out and it seems my brain has put up a note to the effect that it has gone for a weekend break....
|"Screw this - I'm outta here."|
*Please note that I have never told Julie to 'Shut up.' I love and respect her too much to do that.