Researches have found that being selfish really does make us happier-- as long as we don't feel guilty. The key is to feel you have no choice but to be selfish, it's your last resort. In contrast, the study shows those who actively choose a selfish path usually feel guilty. Researchers speculate that because we're taught as children that "sharing means caring" we often feel bad prioritizing ourselves over others, and so we often forego things that will make us happy. In the study, scientists gave a group of undergraduates 3-dollars each. Some were told to donate the money to a charity, some were told to keep the money, and others were told to do what they wanted with the money. Those who were told to keep the money reported being happier than those told to donate or given free choice. (Source: DailyMail)