Heard some interesting things to try yesterday.
1. Put your obsessive thought into words. Now sing it to yourself to the tune of happy birthday 😂
2. Pick one word to sum up your obsession. Say the word as many times as you can for 30 seconds.
3. Write your thought down in a notebook. Look at it as if someone else wrote it, as an outside perspective. Then, let another page fall over it and write the next thought. Do this over and over for about 10 minutes.