New Delhi, Aug. 9 -- Disappointment has a way of narrowing our view. A rejected opportunity, a failed plan or the end of a relationship can make the past seem more important than the possibilities still ahead.

In those moments, it is easy to keep replaying what went wrong and wonder what might have happened differently. But sometimes, the biggest obstacle to moving forward is not the setback itself-it is how long we continue to look at it.

Alexander Graham Bell captured this idea in a memorable observation: "When one door closes, another door opens; but we so often look so long and so regretfully upon the closed door, that we do not see the ones which open for us."

The quote is ultimately less about promising that every disappointment ...