I was talking to one of the sisters about this book, which has been selling millions of copies. It appeals to people because it gives a sense that there is a purpose to my life given by God.
The problem is that the book is based on Calvinistic theology. Calvin is famous for his ideas about predestination: God sends those people to heaven he wants, and the rest can go to hell--literally!
This isn't what the Catholic Church teaches. The problem with Warren's book is that it's basically predestination in a different kind of packaging.
It raises some problems, though. If I fall and bruise my knee, is it because from all eternity God planned that, or is it because I was not paying attention to where I was going?
St. Thomas has an interesting point in his discussion of Divine Providence. God's Providence governs all things. Yet, it doesn't exclude the action of secondary causes. Because God made us free, if we act freely, that's covered by Providence. But it doesn't mean that God is sitting in heaven like a puppeteer, pulling strings for each little thing that happens.
This is a fascinating topic, though. What are your thoughts about it?