I often have to read to my kids at night so I try to buy books that I can enjoy too. I bought "Messenger, Messenger." Messenger man gets up before daylight. He sleeps on a mattress on the floor of his (apparently) one room apartment. He rides all day, eats lunch while riding and comes home at night and hits the bed. I'm not sure if this book deals in reality, but it seems plausible.
The life of a messenger doesn't seem very attractive to me and I doubt my kids will want to be messengers when they grow up.