In the Church of Jesus Christ of Latter-day Saints, we believe we are led by modern day prophets. (Click here to read more about prophets, both ancient and modern.)
God is the same yesterday, today, and forever. He called prophets to speak for him from the beginning of mortal time: Adam, Noah, Abraham, Moses, and many, many more. We believe that God continues to call prophets to lead us today.
Prophets don't always speak earth-shattering new doctrines to the world. Sometimes their counsel is simple and forthright, but sometimes in this day and age, simple, forthright reminders are what the world needs the most.
President Spencer W. Kimball served as the 12th President of the Church of Jesus Christ of Latter-day Saints from 1973-1985. Here is some counsel I ran across recently that I think would bless the world if each of us remembered this every day.
"We must remember that those mortals we meet in parking lots, offices, elevators, and elsewhere are that portion of mankind God has given us to love and to serve. It will do us little good to speak of the general brotherhood of mankind if we cannot regard those who are all around us as our brothers and sisters." (The Teachings of Spencer W. Kimball, ed. Edward L. Kimball (1982), 483)