Read this fascinating first-hand account of ten months in the life of a debt collector. The author's conclusion: "My agonizing time as a debt collector did have one bright spot … . After spending ten months wallowing in the misery of others, I'd found it hard to be depressed myself."
(Warning for sensitive readers: the piece contains some words you can't say on TV.)
(For less sensitive readers: if you'd like a refresher on what those are, go here for the classic George Carlin commentary.)