Researchers have documented that people who take time out to help others are more inclined to think they can get everything done than those who don’t. In one experiment, students were told they were going to be asked to help at-risk kids write essays. Some of the students were then told that there weren’t enough participants, so they could take the time off instead. The students who actually assisted on the essay writing turned out to have more confidence that they could get all their work done than those who were given unexpected leisure time. “It is not so much how much time you have,’’ says Harvard Business School’s Michael Norton, “as how you feel about what you can get done in the time that you do have’’ (Boston Globe, April 1).