That was one of the big problems when I was at Harvard studying music. We had to write choral pieces in the style of Brahms or Mendelssohn, which was distressing because in the end you realized how good Brahms is, and how bad you are.
I think that people that are not sensitive, who seem to bang through life, do survive, but I don't think they get the really soaring feelings that people who are more artistically bent can get.