I write picture books, for middle grade, and young adults, some of which have won prizes, been filmed, or become bestsellers. I've ghostwritten for Pixar and developed teen work for Alloy Entertainment.
I think heartfelt writing is the finest. It doesn't have to be personal, but it must be visceral. You want them riveted from the first word, page, or sentence, no matter how painful or unpleasant, and that's my expertise.