It is not so much what you say or what you do that changes people's hearts for the better, it is what God does with what you say and what you do that really counts. No doubt, the content of our words and actions should, at all times, be morally good.
But there are times when a highly publicized achievement will benefit only a few while small and seemingly unimportant deeds- with God's help -will bring about great changes for many. Psalm 127 says it best: "Unless the LORD build the house, they labor in vain who build."
The Catholic monks of old, known for their prayers and sacrifices before embarking on a great mission, were on to something. They taught us before acting make time for prayer and spiritual sacrifices. As such, you will not be the only one acting but God will also act on your behalf.