Charlie Day, who starred in "Horrible Bosses" and plays Charlie Kelly "It's Always Sunny in Philadelphia", gives an awesome speech to Merrimack College students that results in one important lesson:  Go ahead and fail.


Charlie isn't the only celeb to give a speech, singer John Legend gave a speech to students at The University of Pennsylvania, where he also changed the lyrics to his #1 hit song "All of Me".   Read below to see and hear John's speech.