Hope.
We all need this. For many it seems to be the only way that they can cope.

It pushes us through the dark, helps us to see the light.
It coddles us when we are scared at night.
It is the beacon that we are always aiming for, big and bright. 

Sometimes you may feel that it is shrinking, this is only a natural way of thinking.
But the thing you must try to keep in mind is that so is a renewable source.
An unstoppable force.

It will continually regrow.
You may ask me how but my answer is always simple: "I do not know."

It's just a feeling.
That aids human healing.
It is the medicine that I find most appealing.