he who fails to prepare prepares to fail

he who fails to prepare prepares to fail

proverb When there is a lack of adequate preparation, failure becomes more likely. Your test is on Friday, but I highly suggest you start studying for it now. He who fails to prepare prepares to fail. Of course I made an itinerary for our trip—how else would we fit everything in? He who fails to prepare prepares to fail.
See also: fail, he, prepare, who
Farlex Dictionary of Idioms.
See also:
  • teach a man to fish
  • it takes a village
  • village
  • tomorrow never comes
  • bigger they are, the harder they fall
  • bigger they come, the harder they fall, the
  • best-laid plans go astray, the
  • the best-laid plans
  • the best-laid plans go astray
  • the best-laid plans of mice and men