Ideas By Janice Kaplan January 3, 2025 7:00 AM EST Kaplan is the author of many popular books including the New York Times bestseller The Gratitude Diaries and her new book What Your Body Knows About Happiness . She is the former editor-in-chief of Parade magazine I f your goal is to be happier in the year ahead, you might focus on your body rather than your mind. You can start right now by sitting up a little straighter. Then give a brief smile—even a fake one. These tweaks will tell your