The 7 Habits of Highly Effective People: Powerful Lessons in Personal Change, by Stephen R. Covey
If you really want to get a lot out of this book, it will not be a quick and easy read. It is well worth your time and effort though!
Created to Be His Help Meet, by Debi Pearl
This book was given to be by my pastor as a part of pre-marital counseling. It had me in tears. I still read it at least once a year and it always challenges me.
The Total Money Makeover, Dave Ramsey
If you haven't at least heard of Dave Ramsey or this book where have you been? This is an awesome book to have in your library. Read it, apply it, and your finances will benefit!