My accountant had a deadline for submitting things and I was stressing as the day got near. I double checked and I remembered the day wrong and it was a little later.
Here's the thing. If there's a 1% chance that the task will no longer be necessary by the time it's due, I can't afford to risk wasting the time to complete the task. Much better idea to spend that time in stress-paralysis until there is a 100% certainty of the task being necessary.