My son wrote a book for Kindle called LOST!
The book will be free today and tomorrow. (OCT 15 and 16).
It's about 4 characters done in parallel.
The first is a 19 year old girl who gets lost on the Colorado Trail. It gives a real good idea of what people might go through.
The second is about an anorexic girl.
The third is about a vocalist in a band who gets addicted to cocaine.
The fourth is a fantasy quest.
All four stories are tied together by the similar internal struggles the character have.