the problem with this is quite simple

1. both parties dont do their homework
2. often the kid's "dreams" tend to be something he has not worked hard or achieved little success over the years.

i know some dudes who go, my dream is to sing, then starts a band, but doesnt practice, take vocal lessons (coz too expensive), etc etc
reality is that chap cant bloody sing.
then after that he argues that people are judging his direction in life