Windows A yard is nice, but if you don't have one, big windows or a balcony also offer an emotional lift. "Just being able to see how the weather is and knowing what's out there relaxes people and makes them feel more in control," says Zeisel.
Sages going back to Socrates have offered advice on how to be happy, but only now are scientists beginning to address this question with systematic, controlled research. Here, leading scientists reveal what it takes to be happy.
Our December issue features Oprah's Favorite Things—as well as your chance to win them all! You'll also find our easy holiday declutter plan, Dr. Oz's guide to sleeping better (starting tonight) and the ultimate holiday menu.