What can I do?

I read this great reminder in "The Messenger" this morning. Here are some lyrics to Daniel March's hymn "Hark! The Voice of Jesus Calling" to remind us all to be faithful...wherever we are, with whatever we have.
Let none hear you idly saying,
"There is nothing I can do."
While the lost of earth are dying,
And the Master calls for you;
Take the task He gives you gladly;
Let His work your pleasure be;
Answer quickly when He calls you.
"Here am I, send me, send me."