In contemporary life, many people claim to spend extreme lengths of time at the office, such assertions being a form of self-flattery. In her engaging 2010 book “168 Hours: You Have More Time Than You Think,” Laura Vanderkam reports that white-collar Americans dramatically overestimate how much they work: “Research shows that almost no one claiming to work a 70-hour week actually is doing so.” Work, she muses, “has become a competitive sport,” in which people boast of long hours in the way that fishermen boast of larger fish than they actually caught. Vanderkam’s book brings home an important point: Stop making excuses based on time. If there’s something you need to accomplish, there are enough hours in the day – get organized and use your time wisely.