The mind has 2 systems:
"System 1 operates automatically and quickly, with little or no effort and no sense of voluntary control.
System 2 allocates attention to the effortful mental activities that demand it, including complex computations. The operations of System 2 are often associated with the subjective experience of agency, choice, and concentration."
-Thinking, Fast and Slow
System 1 Thinking
Complete this phrase:
System 2 Thinking
Calculate the solution:
69 x 69 =
(You have to take time to do it)
We live our day-to-day using system 1.
The more attention we spend to solve a problem (system 2), the better our system 1 thinking becomes.
Push yourself to solve difficult problems. It'll make your judgment efficiently quicker.