Story of a sand dollar, a boy and a grandfather

Here is a very interesting story would like to share with you:

Story goes as a young boy and his grandfather walking down the beach. A big storm had come in the day before and there were hundreds and hundreds of sand-dollars washed up and starting to die in the sun.
As they walked, the grandfather would stop from time to time, reach down, pick up a sand dollar and throw it into the ocean. Finally, the little boy asked, "Grandfather, why are you throwing them back in?" and his grandfather replied, "So that they will live."

The little boy thought for a minute and said, "But grandfather, there are so many of them! What possible difference can it make?" And the grandfather, reaching down and tossing another one back into the ocean, said, "To that one, it will make all of the difference in the world."
No matter how many times I have heard the tale, each time it touches my heart and reminds me that each day we wake on this planet and are given a new slate. We can choose to be the difference.
Ghandhi said, "We must be the change we wish to see." But, how do we be the change we wish to see in the world, when the world seems so messed up right now? By not trying to boil the ocean, but in starting small and remembering along the way the most simple gesture of good will can have an amazing ripple effect.