This becomes a natural outcome of a life in Christ. Out of the overflowing heart where Jesus dwells, concern for others is a joy. The joy is found in the satisfaction that the caring act is service to God.
How could we serve the Creator? In itself it's almost unfathomable. We do, however, become His hands, arms, feet etc... How does God show that He cares to the world today? Through His children...us. Enjoy the responsibility.
Psalms 2:11 (NIV)
11 Serve the Lord with fear and rejoice with trembling.