I'm great! How are you?

Try this experiment today: Whenever someone says, "How are you?" Tell them you are doing great, instead of the usual - "I'm fine." or "Doing good." You must use some enthusiasm, too. You'll really peek peoples interest and by the end of the day you'll probably be in the best mood. People will ask you why you're so great. You can just tell them that you don't know but you just are and that will be good enough! They'll want whatever you are "taking."