" Telling a child that they are intelligent might make them feel good, but it can also induce a fear of failure, causing the child to avoid challenging situations because they might look bad if they are not successful. In addition, telling a child that they are intelligent suggests that they do not need to work hard to perform well. Because of this, children may be less motivated to make the required effort, and so be more likely to fail. "

― Richard Wiseman , 59 Seconds: Think a Little, Change a Lot