JK Rowling may be the author of the global phenomena that is Harry Potter but she always makes time for her fans on Twitter, especially if they are asking for help.

On Monday the Harry Potter author received a tweet from a fan who said she was 'tired of being sad all the time'.

Ms Rowling replied in eight minutes, telling the Harry Potter fan to 'ask for help' and 'don't fight alone'. 

Other Harry Potter fans soon followed with their messages of support.