recently chua news book battle hymn tiger mother raised storm american households read book excerpt published wall street journal enrage parents challenged forms indian parents chua's parenting style western parenting style protecting delicate fragile self-esteem children foreign remember trembled bring report cards scores front parents times great score letter marks country learned exhibit dissatisfaction child fails deliver encouraging great grades slacking positive reinforcement learned success exams told pressurize study kids relax good nights sleep unlike study night exams sports games motto winner kids showered trophies accolades child athletic type chua tells americans chinese read asian style parenting parenting policy simple give kids false sense success security lying great disservice real world tough place boss good work failed strategy practiced daughters sound shocking western parents sleepover party grades drama clubs video computer games girlfriends school harsh doubt make point reality hard children agree children told clear unambiguous giving complacent option children simple message give message hard drill sergeant american education system good features chua pointed greatest weakness complacency lack competitive spirit underestimating sense self-esteem children weakness fixed prove fatal country's future 