The wonderful Donna Cameron recently posted an entry on her Year of Living Kindly blog about The Power of Kindness.
It contains a long-ish quote from Ralph Marston that is well worth sharing. I believe all of my readers are kind people, so this should encourage you in that excellent quality.
Though it may seem that your kindness is not always appreciated, it does indeed have an impact every time. The less it seems to be appreciated, the more it is needed, and the more of a positive difference it can make. (read more: at The Power of Kindness. )