Every year, on October 4 the World Smile Day is observed. The day is a reminder to explore and use one of the greatest gifts humankind has received: Smile. Here are 10 common things that can always make you smile. Every year, on October 4 the World Smile Day is observed. The day is a reminder to explore and use one of the greatest gifts humankind has received: Smile. Here are 10 common things that can always make you smile. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle