I usually have two books going at the same time. (Reading them, not writing them.) Right now, there's How to Say No to a Stubborn Habit: Even When You Feel Like Saying Yes by Erwin Lutzer and The Wild Blue: The Men and Boys Who Flew the B-24s Over Germany 1944-1945.
Ambrose was a favorite historian of mine. His biography of Dwight Eisenhower, one of the best studies of Ike I've read and Citizen Soldiers, a moving account of the heroism of G.I.s who were central to the Allied victory in World War 2, are among my favorites.
The Wild Blue focuses particularly on a man whose heroism and patriotism were later impugned when he ran for president in 1972, George McGovern. The South Dakotan who would later become an historian and a US Senator, piloted what were, by common consent, the most difficult-to-fly aircraft of the war. This is a great book!
Lutzer, a very conservative Christian evangelical, provides tremendous insights and guidance for anyone wanting to defeat bad habits in their lives.
Without the Bible, God's book, and other reading material, life would be barren. (In saying this, I'm not putting other books on a par with the Bible, by the way. It would be ridiculous to compare any book to the Word of God! But I am glad that God has gifted some people to author all kinds of books.) I'm so thankful for the gift of reading, for authors, and for the fact that my mom took me to the library to get borrowing privileges when I was little. (My first book was an oversized book containing photographs by Matthew Brady and others chronicling Abraham Lincoln and his times. Already a nerd, I was about four at the time.)