Work how to make fast/slow ? /Reason of focus increases.

If any man do any work
Then execution (process or procedure) fast or slow is depend on man behavior, working style and more.
Focus is study the changing environment didn't see any other side.

According to  our brain thinking due to habit or
Interest" our present situation is" puting heed
Of future make the environmently  of me.
Focus increases due to
(1) more experience
(2) any large reason for changes

" When many problem comes then we do focus nessesry things and if not then focus all world things"

Thanks.....