One day at the beach we noticed someone picking up starfish that, at low tide, had been washed ashore.
One at a time he was throwing them back into the sea. He said “If I don’t do this they’ll die from a lack of oxygen.”
“But there are thousands of starfish on this beach and thousands more on other beaches. You can’t possibly make a difference.”
Throwing another starfish back into the sea, he smiled and shouted jubilantly “Made a difference to that one!”
And one by one we all can