I can't really fathom why someone would want to or need to think of this when they play or practice.
Dedicating practice to specifics is great I think, but this is too specific.
I'm sure most of us at some point in life had had lots going on whilst you try to concentrate on something. The kids screaming in the back of the car whilst you try to negotiate the world's busiest junction at rush hour comes to mind...and all you need is for the kids to keep quiet for the next 10 seconds whilst you pick the right gap between cars to pull out. Pool is a lot like that. Negotiating the junction is the shot you're trying to play and the screaming kids are the ridiculous thoughts you have a out something you read on an internet forum that people assured you would improve your game. Next time, leave the kids at home