If you’ve got a bold idea, today’s the day to act on it. Follow whatever feels energizing, inspiring, or a thrilling mix of both. Start the novel you’ve been writing in your head. Wave to a neighbor you usually just pass by. Invite friends who are more like siblings over for dinner. Even if you don’t know how it’ll turn out, making the first move will have an outsize ripple effect. And you can be proud that you gave it your best shot.