I'm in the boat of "try not to think about it", or more importantly, "think about something else."
My first was the biggest example. I shot it in the middle of a tornado warning. Seriously. Weatherman interrupted a baseball game in the middle of summer leagues to issue a tornado warning during the middle stages of our second game. 6 frames in, and I wasn't really thinking about it, as I was throwing my shot, looking at the TV, and then outside at those playing sand volleyball while seeing the clouds rolling in. wash/rinse/repeat for the 7th - 9th.
By the time the 10th frame came up, we could see wall clouds in the distance. I threw my 10th, went back to the door and looked again. took about 30 seconds, threw the 11th. Looked one more time as the sand volleyball players started wrapping up, then threw my 12th. In all honesty, I didn't realize I had done it because my mind was completely on something else.
Funnily enough, this was a 4-game block for league, and I ended up going back 6, next 12, then front 6 before leaving a stone 9-pin. If I had strung them together when needed, a back-to-back would have been sweet.
But each time I've shot 300, I've tried my hardest to get my mind off of it, because I already tend to overthink anyway. The less I think about it, the more focused I would be. Analysis Paralysis sucks.
BL.