"To the world you may be one person but to one person you may be the world."
I have this quote hanging on my kitchen wall. We go about our daily lives not really wondering if we're making a difference in someone else's life but for some of us we make more of an impact than we realize. It's true that to some people you encounter in life, you are that one person that made a difference to them so don't think that you don't matter because you do. We all need each other whether we realize it or not.