I get hung up on the occasional thing, I don’t have pervasive anxiety, but when that thing crosses my mind I would reflexively say a phrase to myself that is… very unhealthy. Once this mental tic gets established it makes the thing that was stuck get more ingrained so if I say the tic in my head I will just immediately start repeating “love yourself” over and over until the impulse to say the other thing has passed, eventually I’ll feel the impulse with out saying the tic and just start saying “love yourself” again and again until the impulse passes, after that it slowly fades out. I know it’s corny but it helps me when I find my mind reflexively responding to a memory with intense hostility