I read lots of books. It helps to absorb as much information as you can. You never know where inspiration for a song might come from. Unbroken is a great book. it is about Louis Zamperini. His plane crashed in the water in WWII. He was stranded at sea and became a POW in Japan. After the war ended he tells how he attended a Billy Graham crusade and became a christian. The story is about how Louis was able to forgive the guards who tortured him in the camps. A great book to read. The book is better than the movie. Check it out.