David Michael Letterman (born April 12, 1947) is an American television host, comedian, writer and producer. He hosted late-night television talk shows for 33 years, beginning with the February 1, 1982, debut of Late Night with David Letterman on NBC and ending with the May 20, 2015, broadcast of Late...
To change one's life: Start immediately. Do it flamboyantly. No exceptions.