How about biographies? Try A Boy Called It, The Hiding Place(by Corrie Ten Boom), or a biography of someone you admire.
You can also look into horror, if that's more your type, lots of stuff out there by Stephen King and R. L. Stine are good for teens.
You can also go for a classic, like The Yearling, or some Mark Twain. There's plenty of stuff out there, just go check out your local library!