A completely-not-made-up rule that states: for every 5 consecutive decisions, 2 must be made with reckless abandon, and 1 must be made with reckless abandon, but only on Tuesdays.
Or, in other words, 2/5 decisions should be made with caution, and 1/5 should be made without any consideration for consequences whatsoever. On Tuesdays, however, all bets are off, and 1/5 decisions should be made with reckless abandon, and 1/5 should be made with reckless abandon, and 3/5 should be just winged.
Learn about the 2-1-3 Rule Theoretical Applications of the 5-2-1 Rule