To sum up, sometimes happiness is the cause of a smile, but sometimes your smile, it causes pleasure" that now you are suffering or happy smile into something now, they will get better. it also helps boost confidence and self-esteem. Knowing that your teeth are properly aligned when you smile makes smiling contagious! It is never too late in life to benefit from a straight, beautiful smile!
Before you start, try to turn the surrounding people smiling or try to smile to strangers in elevators or on trains are not sure whether you could find a new friend