DD4 is a bright girl but going through an irritating stage of just saying 'I can't' to absolutely anything. From standing up to walking down the stairs at times. She'll try something once, like catching a ball, but if she doesn't crack it first time announces that she's no good at anything and refuses to have another go. Does anyone have any recommendations for good books about keeping trying, having a go and not giving up etc that might provide food for thought?
(FYI - there's nothing wrong with her and she's a generally happy little girl, its just a phase, but I'm finding it quite wearing...)