If it is not today’s problem, sleep on it, assess tomorrow with fresh eyes.
And then act; problems do not improve with age.
This is a good rule about life in general that extends to the intelligence profession.
Ever go to sleep worried about a problem and find that the solution hits you upon awakening after a good night's sleep?
Your brain needs downtime, both to recharge and mull over difficult situations.
And so give yourself time, and rest, and sleep, before attempting to solve a problem.
But once the solution hits you, waste no time. Be decisive. You may not always make the right decision, but decisiveness is important. So go for it, and don’t look back.
Indecision and procrastination, on the other hand, will lead to trouble—and ultimately kick you in the butt.