During the last week I have read the book Into the Wild by Jon Krakauer which is a story about a boy giving up his entire life to live a simple life in the wild. Christopher McCandless was the boys name and throughout the book Mr. Krakauer try to identify what is was that drove a more or less common boy to abandon his family and life without a feeling of remorse.
The story has also been made into a movie and whether you read the book or watch the movie I recommend you to do one of them. The story is sad but interesting and deliver questions for you to answer.
More information
Into the Wild at IMDB
Into the Wild at Amazon