What is the value of a smile?

I was watching a program, and the girl they where gonna do a make over on has an accident loosing her front teeth and forcing her not to smile nor express herself the way she wanted to, and that also reflected of how much older it made her look by not smiling.

Made me realize that a persona that doesn't smile shows them selves as older people, more serious, unhappy or ashamed of something they have.

A smile is everything, it shows who you are and what you are. A smile is so powerful that it can even capture someone's interest.

Never stop smiling, you never know who will love you just for that or even where it can get you to. A smile has amazing powers and people don't seem to appreciate it so much.