New research involving Oxford researchers has shown that a simple digital intervention that includes gameplay can dramatically reduce intrusive memories of trauma in a month, even to the point of being symptom-free after six months. This treatment was also very effective at reducing the symptoms of post-traumatic stress disorder (PTSD) more generally. The findings have been
https://knowyourmeme.com/memes/rotating-a-cow-in-mind
I suspect the memes started because research into image rotation got in the news cycle, and the Internet took it from there.