Smile-
form one's features into a pleased, kind, or amused expression, typically with the corners of the mouth turned up and the front teeth exposed.

But it is so much more. Imagine this:

You're waiting in line for lunch at school
you've had a really bad day
Your friends aren't talking to you
You failed a major test
your dad just left

The thoughts in your brain are taking over
You search the room for something to make it better
On the left is someone talking
On the right is someone talking
You look behind you, someone talking
But when you look at this person they do something different
They look at you kindly
And they smile

A smile is pointless if only polite
But this smile was beautiful, mouth open wide
How could she knows that you needed it so much?
Such a small action made your heart touched
But she didn't know
She just did it because she could
So you smile back
Somehow brighter than hers?
And suddenly your sadness has been cured

So you go to your table at lunch after getting the food
Feeling lighter and more than cured
You are happy, somehow
It doesn't last long
But now you can remember the kindness of one

The rest of your classes go by easier
After school you go out with a friend instead of eating food from the freezer
You get an okay night sleep
And this time you don't weep

More days go by, still feeling lighter
You don't even remember the smile
But now you have these habits from the days before
And you like your life more

It's crazy what one smile can do it's so easy but impactful if it's true