Bolt: What if I don’t win? Mama: When did you become so serious Usain? Bolt: Don’t let me go dear Mama, please… Mama: The boy I know has no worries, because all worries ever do is weigh you down. You have to remember… you can always go fast when you keep it light. Bolt: Okay. No worries mama.   This conversation is what they say ensued between Usain and his mom in the short film in Usain Bolt’s honour, The…