You think more than you think when you are not thinking, I think.
OK in simple terms your mind knows what it has to do if you let it, that comes with practise.
When I first started with wheelies you think about the distance and pin and peepsight and anchor point, later you just think about the target and your brain does the rest.
You still consider all the other things but you dont realise it.
Good example - when you sleep and your kids get up to go or get water, you dont wake up cause your subconsious will recognise the noise as friendly and you stay sleeping.
Someone tries the back door and you are awake instantly....
Shooting instinctive is the same your mind just needs practise to get to that level.