Closing doors

John Tierney, NYT: The Advantages of Closing a Few Doors
"Closing a door on an option is experienced as a loss, and people are willing to pay a price to avoid the emotion of loss," Dr. Ariely says. In the experiment, the price was easy to measure in lost cash. In life, the costs are less obvious -- wasted time, missed opportunities. If you are afraid to drop any project at the office, you pay for it at home.

People usually try to keep their options open and not burn bridges. Maybe it would be better to burn a few now and again, just to limit your choices.