I wish I had more time and resources to help make a difference in this world but whenever I feel overwhelmed by all that needs to be done, I remember "The Legend of the Starfish" (author unknown):

A vacationing businessman was walking along a beach when he saw a young boy.  Along the shore were many starfish that had been washed up by the tide and were sure to die before the tide returned.  The boy was walking slowly along the shore and occasionally reached down and tossed a beached starfish back into the ocean.

The businessman, hoping to teach the boy a little lesson in common sense, walked up to him and said, "I've been watching what you're doing, son.  You have a good heart and I know you mean well but do you realize how many beaches there are around here and how many starfish are dying on every beach every day?  Surely such an industrious and kind hearted boy such as yourself could find something better to do with your time.  Do you really think that what you're doing is going to make a difference?"

The boy looked up at the man and then he looked down at a starfish by his feet.  He picked it up and as he gently tossed it back into the ocean he said, "It makes a difference to that one."

Some of my favorite quotations...

"If you have an apple and I have an apple and we exchange apples then you and I will still each have one apple.  But if you have an idea and I have an idea and we exchange these ideas, then each of us will have two ideas."

- George Bernard Shaw

"Keep away from people who try to belittle your ambitions.  Small people always do that, but the really great make you feel that you, too, can become great."
- Mark Twain

"Problems are only opportunities in work clothes."
- Henry J. Kaiser

"Happiness is not a station you arrive at, but a manner of traveling."
- Margaret B. Runbeck