To avoid over-ruminating about a decision, give yourself a time frame to think about it. 

If it’s a small issue such as what paint color to paint your office, perhaps a deadline of 10 minutes is sufficient; whereas a larger decision such as whether to accept a new job offer in another city may warrant a couple of days of thought.

Letting the inactive parts of your brain work through the problem can let the answer come to you when you’re not expecting it. 

When you find yourself overthinking about a problem, try moving on to another subject or changing your physical space by going for a walk, or moving your la...