One of my friends once told me when I was really down ...

Each person is like a stone being thrown in a pond. The ripples being sent from where the stone entered the water.

We can't see the affects we have in this world sometimes, but each ripple from our very existence has intersected with many others in some way.

I often think of that, where have my ripples gone and what have I changed in this world due to my 'small' actions of simply existing.