Dick Van Dyke, the legendary actor and dancer who will turn 100 on December 13, credits his remarkable longevity to a few simple but powerful choices. Known for his iconic roles in Mary Poppins and Chitty Chitty Bang Bang, Van Dyke has outlived most of his peers, attributing his vitality to quitting two harmful habits decades ago and refusing to let anger or resentment take root in his life. In interviews and his new book 100 Rules for Living to 100, he emphasizes that staying healthy isn’t about exotic supplements—it’s about avoiding what drags you down.

Van Dyke’s career spans more than seven decades, from Broadway’s Bye Bye Birdie to The Dick Van Dyke Show, earning multiple Emmys, a Tony, and even a Grammy. Yet his health journey wasn’t always smooth. He struggled with heavy drinking and smoking for years, only recognizing the dangers after middle age. Once he realized the toll these habits took on his body, he quit both entirely—an effort he credits as the single most important factor in his longevity. “I got rid of booze and cigarettes and all that stuff, which is probably why I’m still here,” he said.

Beyond substances, Van Dyke learned another crucial lesson from his father: bitterness is deadly. Having witnessed his father’s health decline from chronic anger, Van Dyke chose a different path. He actively avoids hatred and resentment, focusing instead on joy, humor, and love. Even at 99, he exercises three times a week, dances regularly, and cherishes playful moments, believing movement and laughter are essential for life. Van Dyke also eats fresh, light meals while allowing himself nightly indulgences, like ice cream.

With a long-lasting marriage to Arlene Silver and a positive outlook, Van Dyke says he faces aging without fear. “I’ve had such a wonderfully full and exciting life. That I can’t complain,” he reflects. For him, the secret to longevity is clear: quit the bad habits, let go of anger, embrace joy, and keep moving—both physically and spiritually.